]> git.ipfire.org Git - thirdparty/kernel/stable-queue.git/commitdiff
6.6-stable patches
authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 15 Jun 2026 14:41:42 +0000 (16:41 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 15 Jun 2026 14:41:42 +0000 (16:41 +0200)
added patches:
alsa-timer-fix-uaf-at-snd_timer_user_params.patch
arm-9474-1-io-avoid-kasan-instrumentation-of-raw-halfword-i-o.patch
arm-9475-1-entry-use-byte-load-for-kasan-vmap-stack-shadow.patch
arm-socfpga-fix-of-node-refcount-leak-in-smp-setup.patch
asoc-fsl_sai-fix-32-slots-tdm-broken-by-integer-shift-ub-in-xmr-write.patch
bnxt_en-fix-null-pointer-dereference.patch
drm-amd-display-reject-gpio_bitshift-32-in-bios_parser_get_gpio_pin_info.patch
drm-virtio-fix-dma_fence-refcount-leak-on-error-in-virtio_gpu_dma_fence_wait.patch
ib-isert-reject-login-pdus-shorter-than-iser_headers_len.patch
inet-frags-fix-use-after-free-caused-by-the-fqdir_pre_exit-flush.patch
ksmbd-fix-use-after-free-of-a-deferred-file_lock-on-double-smb2_cancel.patch
mm-damon-ops-common-call-folio_test_lru-after-folio_get.patch
mptcp-allow-subflow-rcv-wnd-to-shrink.patch
mptcp-close-toctou-race-while-computing-rcv_wnd.patch
mptcp-fix-retransmission-loop-when-csum-is-enabled.patch
mptcp-sockopt-check-timestamping-ret-value.patch
pidfd-refuse-access-to-tasks-that-have-started-exiting-harder.patch
rdma-srp-bound-srp_rsp-sense-copy-by-the-received-length.patch
selftests-mptcp-add-test-for-extra_subflows-underflow-on-userspace-pm.patch
udp-clear-skb-dev-before-running-a-sockmap-verdict.patch
usb-serial-io_ti-fix-heap-overflow-in-build_i2c_fw_hdr.patch
usb-serial-io_ti-fix-heap-overflow-in-get_manuf_info.patch
usb-serial-kl5kusb105-fix-bulk-out-buffer-overflow.patch
usb-serial-option-add-usb-id-for-dell-wireless-dw5826e-m.patch
vsock-vmci-fix-sk_ack_backlog-leak-on-failed-handshake.patch
wifi-nl80211-reject-oversized-ema-rnr-lists.patch
xfrm-espintcp-do-not-reuse-an-in-progress-partial-send.patch
zram-fix-use-after-free-in-zram_bvec_write_partial.patch

29 files changed:
queue-6.6/alsa-timer-fix-uaf-at-snd_timer_user_params.patch [new file with mode: 0644]
queue-6.6/arm-9474-1-io-avoid-kasan-instrumentation-of-raw-halfword-i-o.patch [new file with mode: 0644]
queue-6.6/arm-9475-1-entry-use-byte-load-for-kasan-vmap-stack-shadow.patch [new file with mode: 0644]
queue-6.6/arm-socfpga-fix-of-node-refcount-leak-in-smp-setup.patch [new file with mode: 0644]
queue-6.6/asoc-fsl_sai-fix-32-slots-tdm-broken-by-integer-shift-ub-in-xmr-write.patch [new file with mode: 0644]
queue-6.6/bnxt_en-fix-null-pointer-dereference.patch [new file with mode: 0644]
queue-6.6/drm-amd-display-reject-gpio_bitshift-32-in-bios_parser_get_gpio_pin_info.patch [new file with mode: 0644]
queue-6.6/drm-virtio-fix-dma_fence-refcount-leak-on-error-in-virtio_gpu_dma_fence_wait.patch [new file with mode: 0644]
queue-6.6/ib-isert-reject-login-pdus-shorter-than-iser_headers_len.patch [new file with mode: 0644]
queue-6.6/inet-frags-fix-use-after-free-caused-by-the-fqdir_pre_exit-flush.patch [new file with mode: 0644]
queue-6.6/ksmbd-fix-use-after-free-of-a-deferred-file_lock-on-double-smb2_cancel.patch [new file with mode: 0644]
queue-6.6/mm-damon-ops-common-call-folio_test_lru-after-folio_get.patch [new file with mode: 0644]
queue-6.6/mptcp-allow-subflow-rcv-wnd-to-shrink.patch [new file with mode: 0644]
queue-6.6/mptcp-close-toctou-race-while-computing-rcv_wnd.patch [new file with mode: 0644]
queue-6.6/mptcp-fix-retransmission-loop-when-csum-is-enabled.patch [new file with mode: 0644]
queue-6.6/mptcp-sockopt-check-timestamping-ret-value.patch [new file with mode: 0644]
queue-6.6/pidfd-refuse-access-to-tasks-that-have-started-exiting-harder.patch [new file with mode: 0644]
queue-6.6/rdma-srp-bound-srp_rsp-sense-copy-by-the-received-length.patch [new file with mode: 0644]
queue-6.6/selftests-mptcp-add-test-for-extra_subflows-underflow-on-userspace-pm.patch [new file with mode: 0644]
queue-6.6/series
queue-6.6/udp-clear-skb-dev-before-running-a-sockmap-verdict.patch [new file with mode: 0644]
queue-6.6/usb-serial-io_ti-fix-heap-overflow-in-build_i2c_fw_hdr.patch [new file with mode: 0644]
queue-6.6/usb-serial-io_ti-fix-heap-overflow-in-get_manuf_info.patch [new file with mode: 0644]
queue-6.6/usb-serial-kl5kusb105-fix-bulk-out-buffer-overflow.patch [new file with mode: 0644]
queue-6.6/usb-serial-option-add-usb-id-for-dell-wireless-dw5826e-m.patch [new file with mode: 0644]
queue-6.6/vsock-vmci-fix-sk_ack_backlog-leak-on-failed-handshake.patch [new file with mode: 0644]
queue-6.6/wifi-nl80211-reject-oversized-ema-rnr-lists.patch [new file with mode: 0644]
queue-6.6/xfrm-espintcp-do-not-reuse-an-in-progress-partial-send.patch [new file with mode: 0644]
queue-6.6/zram-fix-use-after-free-in-zram_bvec_write_partial.patch [new file with mode: 0644]

diff --git a/queue-6.6/alsa-timer-fix-uaf-at-snd_timer_user_params.patch b/queue-6.6/alsa-timer-fix-uaf-at-snd_timer_user_params.patch
new file mode 100644 (file)
index 0000000..6438dd5
--- /dev/null
@@ -0,0 +1,46 @@
+From 053a401b592be424fea9d57c789f66cd5d8cec11 Mon Sep 17 00:00:00 2001
+From: Takashi Iwai <tiwai@suse.de>
+Date: Sat, 6 Jun 2026 18:11:41 +0200
+Subject: ALSA: timer: Fix UAF at snd_timer_user_params()
+
+From: Takashi Iwai <tiwai@suse.de>
+
+commit 053a401b592be424fea9d57c789f66cd5d8cec11 upstream.
+
+At releasing a timer object, e.g. when a userspace timer
+(CONFIG_SND_UTIMER) gets closed and snd_timer_free() is called, it
+tries to detach the timer instances and release the resources.
+However, it's still possible that other in-flight tasks are holding
+the timer instance where the to-be-deleted timer object is associated,
+and this may lead to racy accesses.
+
+Fortunately, most of ioctls dealing with the timer instance list
+already have the protection with register_mutex, and this also avoids
+such races.  But, SNDRV_TIMER_IOCTL_PARAMS isn't protected, hence the
+concurrent ioctl may lead to use-after-free.
+
+This patch just adds the guard with register_mutex to protect
+snd_timer_user_params() for covering the code path as a quick
+workaround.  It's no hot-path but rather a rarely issued ioctl, so the
+performance penalty doesn't matter.
+
+Reported-by: Kyle Zeng <kylebot@openai.com>
+Tested-by: Kyle Zeng <kylebot@openai.com>
+Cc: <stable@vger.kernel.org>
+Link: https://patch.msgid.link/20260606161145.1933447-2-tiwai@suse.de
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ sound/core/timer.c |    1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/sound/core/timer.c
++++ b/sound/core/timer.c
+@@ -1850,6 +1850,7 @@ static int snd_timer_user_params(struct
+       struct snd_timer *t;
+       int err;
++      guard(mutex)(&register_mutex);
+       tu = file->private_data;
+       if (!tu->timeri)
+               return -EBADFD;
diff --git a/queue-6.6/arm-9474-1-io-avoid-kasan-instrumentation-of-raw-halfword-i-o.patch b/queue-6.6/arm-9474-1-io-avoid-kasan-instrumentation-of-raw-halfword-i-o.patch
new file mode 100644 (file)
index 0000000..f437211
--- /dev/null
@@ -0,0 +1,57 @@
+From d59ed803715a71fb9582e139d648ece8d66dc743 Mon Sep 17 00:00:00 2001
+From: Karl Mehltretter <kmehltretter@gmail.com>
+Date: Sun, 24 May 2026 06:52:36 +0100
+Subject: ARM: 9474/1: io: avoid KASAN instrumentation of raw halfword I/O
+
+From: Karl Mehltretter <kmehltretter@gmail.com>
+
+commit d59ed803715a71fb9582e139d648ece8d66dc743 upstream.
+
+For CPUs before ARMv6, __raw_readw() and __raw_writew() are implemented
+as C volatile halfword accesses so the compiler can generate an access
+sequence that is safe for those machines. With KASAN enabled, those C
+accesses are instrumented as normal memory accesses.
+
+That is not valid for MMIO. On ARM926/VersatilePB with KASAN enabled,
+PL011 probing traps in __asan_store2() while registering the UART, because
+the instrumented writew() tries to check KASAN shadow for an MMIO address.
+
+Keep the existing volatile halfword access, but move the ARMv5 definitions
+into __no_kasan_or_inline functions so raw MMIO halfword accesses are not
+instrumented by KASAN. The ARMv6-and-newer inline assembly path is
+unchanged.
+
+Fixes: 421015713b30 ("ARM: 9017/2: Enable KASan for ARM")
+Cc: stable@vger.kernel.org # v5.11+
+Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
+Reviewed-by: Linus Walleij <linusw@kernel.org>
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ arch/arm/include/asm/io.h |   15 +++++++++++++--
+ 1 file changed, 13 insertions(+), 2 deletions(-)
+
+--- a/arch/arm/include/asm/io.h
++++ b/arch/arm/include/asm/io.h
+@@ -56,8 +56,19 @@ void __raw_readsl(const volatile void __
+  * the bus. Rather than special-case the machine, just let the compiler
+  * generate the access for CPUs prior to ARMv6.
+  */
+-#define __raw_readw(a)         (__chk_io_ptr(a), *(volatile unsigned short __force *)(a))
+-#define __raw_writew(v,a)      ((void)(__chk_io_ptr(a), *(volatile unsigned short __force *)(a) = (v)))
++#define __raw_writew __raw_writew
++static __no_kasan_or_inline void __raw_writew(u16 val, volatile void __iomem *addr)
++{
++      __chk_io_ptr(addr);
++      *(volatile unsigned short __force *)addr = val;
++}
++
++#define __raw_readw __raw_readw
++static __no_kasan_or_inline u16 __raw_readw(const volatile void __iomem *addr)
++{
++      __chk_io_ptr(addr);
++      return *(const volatile unsigned short __force *)addr;
++}
+ #else
+ /*
+  * When running under a hypervisor, we want to avoid I/O accesses with
diff --git a/queue-6.6/arm-9475-1-entry-use-byte-load-for-kasan-vmap-stack-shadow.patch b/queue-6.6/arm-9475-1-entry-use-byte-load-for-kasan-vmap-stack-shadow.patch
new file mode 100644 (file)
index 0000000..b6c914e
--- /dev/null
@@ -0,0 +1,43 @@
+From 77a1f6883dc6e837bb2cb30b9b02e2f94338e2c6 Mon Sep 17 00:00:00 2001
+From: Karl Mehltretter <kmehltretter@gmail.com>
+Date: Sun, 24 May 2026 06:52:35 +0100
+Subject: ARM: 9475/1: entry: use byte load for KASAN VMAP stack shadow
+
+From: Karl Mehltretter <kmehltretter@gmail.com>
+
+commit 77a1f6883dc6e837bb2cb30b9b02e2f94338e2c6 upstream.
+
+Commit 44e9a3bb76e5 ("ARM: 9430/1: entry: Do a dummy read from
+VMAP shadow") added a dummy read from the KASAN VMAP stack shadow in
+__switch_to(). The read uses ldr, but the KASAN shadow address is
+byte-granular and is not guaranteed to be word aligned.
+
+ARMv5 faults unaligned word loads. With CONFIG_KASAN_VMALLOC and
+CONFIG_VMAP_STACK enabled, ARM926/VersatilePB crashes in __switch_to()
+with an alignment exception before reaching init.
+
+Use ldrb for the dummy shadow access. The code only needs to fault in the
+shadow mapping if the stack shadow is missing, so a byte load is sufficient
+and matches the granularity of KASAN shadow memory.
+
+Fixes: 44e9a3bb76e5 ("ARM: 9430/1: entry: Do a dummy read from VMAP shadow")
+Cc: stable@vger.kernel.org # v6.13+
+Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
+Reviewed-by: Linus Walleij <linusw@kernel.org>
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ arch/arm/kernel/entry-armv.S |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/arm/kernel/entry-armv.S
++++ b/arch/arm/kernel/entry-armv.S
+@@ -561,7 +561,7 @@ ENTRY(__switch_to)
+       @ are using KASAN
+       mov_l   r2, KASAN_SHADOW_OFFSET
+       add     r2, r2, ip, lsr #KASAN_SHADOW_SCALE_SHIFT
+-      ldr     r2, [r2]
++      ldrb    r2, [r2]
+ #endif
+ #endif
diff --git a/queue-6.6/arm-socfpga-fix-of-node-refcount-leak-in-smp-setup.patch b/queue-6.6/arm-socfpga-fix-of-node-refcount-leak-in-smp-setup.patch
new file mode 100644 (file)
index 0000000..a961ded
--- /dev/null
@@ -0,0 +1,39 @@
+From 63838c323924fe4a78b2323bd45aa1030f72ca60 Mon Sep 17 00:00:00 2001
+From: Yuho Choi <dbgh9129@gmail.com>
+Date: Sun, 24 May 2026 22:47:09 -0400
+Subject: ARM: socfpga: Fix OF node refcount leak in SMP setup
+
+From: Yuho Choi <dbgh9129@gmail.com>
+
+commit 63838c323924fe4a78b2323bd45aa1030f72ca60 upstream.
+
+socfpga_smp_prepare_cpus() looks up the Cortex-A9 SCU node with
+of_find_compatible_node(), which returns a node reference that must be
+released with of_node_put().
+
+The function maps the SCU registers and then returns without dropping
+that reference, leaking the node on both the success path and the
+of_iomap() failure path.
+
+Drop the reference once the mapping attempt is complete. The returned
+MMIO mapping does not depend on keeping the device node reference held.
+
+Fixes: 122694a0c712 ("ARM: socfpga: use of_iomap to map the SCU")
+Cc: stable@vger.kernel.org
+Signed-off-by: Yuho Choi <dbgh9129@gmail.com>
+Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ arch/arm/mach-socfpga/platsmp.c |    1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/arch/arm/mach-socfpga/platsmp.c
++++ b/arch/arm/mach-socfpga/platsmp.c
+@@ -78,6 +78,7 @@ static void __init socfpga_smp_prepare_c
+       }
+       socfpga_scu_base_addr = of_iomap(np, 0);
++      of_node_put(np);
+       if (!socfpga_scu_base_addr)
+               return;
+       scu_enable(socfpga_scu_base_addr);
diff --git a/queue-6.6/asoc-fsl_sai-fix-32-slots-tdm-broken-by-integer-shift-ub-in-xmr-write.patch b/queue-6.6/asoc-fsl_sai-fix-32-slots-tdm-broken-by-integer-shift-ub-in-xmr-write.patch
new file mode 100644 (file)
index 0000000..eee90e9
--- /dev/null
@@ -0,0 +1,43 @@
+From 4790af1cc2e8871fb31f28c66e42b9a949a23992 Mon Sep 17 00:00:00 2001
+From: Chancel Liu <chancel.liu@nxp.com>
+Date: Mon, 1 Jun 2026 17:33:27 +0900
+Subject: ASoC: fsl_sai: Fix 32 slots TDM broken by integer shift UB in xMR write
+
+From: Chancel Liu <chancel.liu@nxp.com>
+
+commit 4790af1cc2e8871fb31f28c66e42b9a949a23992 upstream.
+
+When configuring 32 slots TDM (channels == slots == 32), the xMR
+(Mask Register) write used:
+~0UL - ((1 << min(channels, slots)) - 1)
+
+The literal "1" is a signed 32-bit int. Shifting it by 32 positions is
+undefined behaviour which may set this register to 0xFFFFFFFF, masking
+all 32 slots.
+
+Use GENMASK_U32() macro instead. For 32 slots this produces a zero mask:
+~GENMASK_U32(31, 0) = ~0xFFFFFFFF = 0x00000000
+Behaviour for fewer than 32 slots is unchanged.
+
+Fixes: 770f58d7d2c5 ("ASoC: fsl_sai: Support multiple data channel enable bits")
+Cc: stable@vger.kernel.org
+Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
+Reviewed-by: Shengjiu Wang <shengjiu.wang@gmail.com>
+Link: https://patch.msgid.link/20260601083327.1535185-1-chancel.liu@oss.nxp.com
+Signed-off-by: Mark Brown <broonie@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ sound/soc/fsl/fsl_sai.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/sound/soc/fsl/fsl_sai.c
++++ b/sound/soc/fsl/fsl_sai.c
+@@ -705,7 +705,7 @@ static int fsl_sai_hw_params(struct snd_
+                                  FSL_SAI_CR4_FSD_MSTR, FSL_SAI_CR4_FSD_MSTR);
+       regmap_write(sai->regmap, FSL_SAI_xMR(tx),
+-                   ~0UL - ((1 << min(channels, slots)) - 1));
++                   ~GENMASK_U32(min(channels, slots) - 1, 0));
+       return 0;
+ }
diff --git a/queue-6.6/bnxt_en-fix-null-pointer-dereference.patch b/queue-6.6/bnxt_en-fix-null-pointer-dereference.patch
new file mode 100644 (file)
index 0000000..81baa3d
--- /dev/null
@@ -0,0 +1,45 @@
+From d930276f2cddd0b7294cac7a8fe7b877f6d9e08d Mon Sep 17 00:00:00 2001
+From: Kyle Meyer <kyle.meyer@hpe.com>
+Date: Fri, 5 Jun 2026 17:25:24 -0500
+Subject: bnxt_en: Fix NULL pointer dereference
+
+From: Kyle Meyer <kyle.meyer@hpe.com>
+
+commit d930276f2cddd0b7294cac7a8fe7b877f6d9e08d upstream.
+
+PCIe errors detected by a Root Port or Downstream Port cause error
+recovery services to run on all subordinate devices regardless of
+administrative state.
+
+The .error_detected() callback, bnxt_io_error_detected(), disables
+and synchronizes IRQs via bnxt_disable_int_sync(), which calls
+bnxt_cp_num_to_irq_num() to map completion rings to IRQs using
+bp->bnapi.
+
+Since bp->bnapi is allocated on NIC open and freed on NIC close, PCIe
+error recovery on a closed NIC can dereference a NULL pointer.
+
+Check if bp->bnapi is NULL before disabling and synchronizing IRQs.
+
+Fixes: e5811b8c09df ("bnxt_en: Add IRQ remapping logic.")
+Cc: stable@vger.kernel.org
+Signed-off-by: Kyle Meyer <kyle.meyer@hpe.com>
+Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
+Link: https://patch.msgid.link/aiNM1CY2-StPilxW@hpe.com
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/net/ethernet/broadcom/bnxt/bnxt.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
++++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+@@ -4698,7 +4698,7 @@ static void bnxt_disable_int_sync(struct
+ {
+       int i;
+-      if (!bp->irq_tbl)
++      if (!bp->irq_tbl || !bp->bnapi)
+               return;
+       atomic_inc(&bp->intr_sem);
diff --git a/queue-6.6/drm-amd-display-reject-gpio_bitshift-32-in-bios_parser_get_gpio_pin_info.patch b/queue-6.6/drm-amd-display-reject-gpio_bitshift-32-in-bios_parser_get_gpio_pin_info.patch
new file mode 100644 (file)
index 0000000..c96dbf3
--- /dev/null
@@ -0,0 +1,48 @@
+From 49c3da65961fe9857c831d47fa1989084e87514a Mon Sep 17 00:00:00 2001
+From: Harry Wentland <harry.wentland@amd.com>
+Date: Tue, 5 May 2026 11:50:07 -0400
+Subject: drm/amd/display: Reject gpio_bitshift >= 32 in bios_parser_get_gpio_pin_info()
+
+From: Harry Wentland <harry.wentland@amd.com>
+
+commit 49c3da65961fe9857c831d47fa1989084e87514a upstream.
+
+[Why & How]
+gpio_bitshift is a uint8_t read directly from the VBIOS GPIO pin table.
+If the value is >= 32, the expression "1 << gpio_bitshift" triggers
+undefined behaviour in C (shift count exceeds type width). On x86 the
+shift is silently masked to 5 bits, producing an incorrect GPIO mask
+that may cause wrong MMIO register bits to be toggled.
+
+Validate gpio_bitshift before use and return BP_RESULT_BADBIOSTABLE for
+out-of-range values.
+
+Fixes: ae79c310b1a6 ("drm/amd/display: Add DCE12 bios parser support")
+Assisted-by: Copilot:claude-opus-4.6
+Reviewed-by: Alex Hung <alex.hung@amd.com>
+Signed-off-by: Harry Wentland <harry.wentland@amd.com>
+Signed-off-by: Ray Wu <ray.wu@amd.com>
+Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+(cherry picked from commit eadf438ab8d370b9d19acee9359918c85afeb80d)
+Cc: stable@vger.kernel.org
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c |    6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+--- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
++++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
+@@ -697,8 +697,10 @@ static enum bp_result bios_parser_get_gp
+               info->offset_en = info->offset + 1;
+               info->offset_mask = info->offset - 1;
+-              info->mask = (uint32_t) (1 <<
+-                      header->gpio_pin[i].gpio_bitshift);
++              if (header->gpio_pin[i].gpio_bitshift >= 32)
++                      return BP_RESULT_BADBIOSTABLE;
++
++              info->mask = 1u << header->gpio_pin[i].gpio_bitshift;
+               info->mask_y = info->mask + 2;
+               info->mask_en = info->mask + 1;
+               info->mask_mask = info->mask - 1;
diff --git a/queue-6.6/drm-virtio-fix-dma_fence-refcount-leak-on-error-in-virtio_gpu_dma_fence_wait.patch b/queue-6.6/drm-virtio-fix-dma_fence-refcount-leak-on-error-in-virtio_gpu_dma_fence_wait.patch
new file mode 100644 (file)
index 0000000..c76808f
--- /dev/null
@@ -0,0 +1,51 @@
+From 3f26bb732cc136ab20176697c92f32c9c84cb125 Mon Sep 17 00:00:00 2001
+From: Wentao Liang <vulab@iscas.ac.cn>
+Date: Sun, 7 Jun 2026 09:03:03 +0000
+Subject: drm/virtio: fix dma_fence refcount leak on error in virtio_gpu_dma_fence_wait()
+
+From: Wentao Liang <vulab@iscas.ac.cn>
+
+commit 3f26bb732cc136ab20176697c92f32c9c84cb125 upstream.
+
+dma_fence_unwrap_for_each() internally calls dma_fence_unwrap_first()
+which does cursor->chain = dma_fence_get(head), taking an extra
+reference. On normal loop completion, dma_fence_unwrap_next()
+releases this via dma_fence_chain_walk() -> dma_fence_put().
+
+When virtio_gpu_do_fence_wait() fails and the function returns early
+from inside the loop, the cursor->chain reference is never released.
+This is the only caller in the entire kernel that does an early return
+inside dma_fence_unwrap_for_each.
+
+Add dma_fence_put(itr.chain) before the early return.
+
+Cc: stable@vger.kernel.org
+Fixes: eba57fb5498f ("drm/virtio: Wait for each dma-fence of in-fence array individually")
+Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
+Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
+Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
+Link: https://patch.msgid.link/20260607090303.92423-1-vulab@iscas.ac.cn
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/gpu/drm/virtio/virtgpu_submit.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/virtio/virtgpu_submit.c b/drivers/gpu/drm/virtio/virtgpu_submit.c
+index dae761fa5788..32cb1e4aa425 100644
+--- a/drivers/gpu/drm/virtio/virtgpu_submit.c
++++ b/drivers/gpu/drm/virtio/virtgpu_submit.c
+@@ -65,8 +65,10 @@ static int virtio_gpu_dma_fence_wait(struct virtio_gpu_submit *submit,
+       dma_fence_unwrap_for_each(f, &itr, fence) {
+               err = virtio_gpu_do_fence_wait(submit, f);
+-              if (err)
++              if (err) {
++                      dma_fence_put(itr.chain);
+                       return err;
++              }
+       }
+       return 0;
+-- 
+2.54.0
+
diff --git a/queue-6.6/ib-isert-reject-login-pdus-shorter-than-iser_headers_len.patch b/queue-6.6/ib-isert-reject-login-pdus-shorter-than-iser_headers_len.patch
new file mode 100644 (file)
index 0000000..5ae3bdf
--- /dev/null
@@ -0,0 +1,58 @@
+From 29e7b925ae6df64894e82ab6419994dc25580a8a Mon Sep 17 00:00:00 2001
+From: Michael Bommarito <michael.bommarito@gmail.com>
+Date: Tue, 2 Jun 2026 15:46:42 -0400
+Subject: IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN
+
+From: Michael Bommarito <michael.bommarito@gmail.com>
+
+commit 29e7b925ae6df64894e82ab6419994dc25580a8a upstream.
+
+In drivers/infiniband/ulp/isert/ib_isert.c, isert_login_recv_done()
+computes the login request payload length as wc->byte_len minus
+ISER_HEADERS_LEN with no lower bound, and login_req_len is a signed int.
+A remote iSER initiator can post a login Send work request carrying
+fewer than ISER_HEADERS_LEN (76) bytes, so the subtraction underflows
+and login_req_len becomes negative.
+
+isert_rx_login_req() then reads that negative length back into a signed
+int, takes size = min(rx_buflen, MAX_KEY_VALUE_PAIRS), and because the
+min() is signed it keeps the negative value; the value is then passed as
+the memcpy() length and sign-extended to a multi-gigabyte size_t. The
+copy into the 8192-byte login->req_buf runs far out of bounds and
+faults, crashing the target node. The login phase precedes iSCSI
+authentication, so no credentials are required to reach this path.
+
+Reject any login PDU shorter than ISER_HEADERS_LEN before the
+subtraction, mirroring the existing early return on a failed work
+completion, so login_req_len can never go negative. The upper bound was
+already safe: a posted login buffer cannot deliver more than
+ISER_RX_PAYLOAD_SIZE, so the difference stays at or below
+MAX_KEY_VALUE_PAIRS and the existing min() clamps it; only the missing
+lower bound needs to be added.
+
+Fixes: b8d26b3be8b3 ("iser-target: Add iSCSI Extensions for RDMA (iSER) target driver")
+Link: https://patch.msgid.link/r/20260602194642.2273217-1-michael.bommarito@gmail.com
+Cc: stable@vger.kernel.org
+Assisted-by: Claude:claude-opus-4-8
+Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
+Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/infiniband/ulp/isert/ib_isert.c |    6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/infiniband/ulp/isert/ib_isert.c
++++ b/drivers/infiniband/ulp/isert/ib_isert.c
+@@ -1388,6 +1388,12 @@ isert_login_recv_done(struct ib_cq *cq,
+       ib_dma_sync_single_for_cpu(ib_dev, isert_conn->login_desc->dma_addr,
+                       ISER_RX_SIZE, DMA_FROM_DEVICE);
++      if (unlikely(wc->byte_len < ISER_HEADERS_LEN)) {
++              isert_dbg("login request length %u is too short\n",
++                        wc->byte_len);
++              return;
++      }
++
+       isert_conn->login_req_len = wc->byte_len - ISER_HEADERS_LEN;
+       if (isert_conn->conn) {
diff --git a/queue-6.6/inet-frags-fix-use-after-free-caused-by-the-fqdir_pre_exit-flush.patch b/queue-6.6/inet-frags-fix-use-after-free-caused-by-the-fqdir_pre_exit-flush.patch
new file mode 100644 (file)
index 0000000..26c7401
--- /dev/null
@@ -0,0 +1,70 @@
+From 32594b09854970d7ba83eb2dc8c69a2edd158c8e Mon Sep 17 00:00:00 2001
+From: Hyunwoo Kim <imv4bel@gmail.com>
+Date: Tue, 2 Jun 2026 19:21:05 +0900
+Subject: inet: frags: fix use-after-free caused by the fqdir_pre_exit() flush
+
+From: Hyunwoo Kim <imv4bel@gmail.com>
+
+commit 32594b09854970d7ba83eb2dc8c69a2edd158c8e upstream.
+
+On netns teardown, fqdir_pre_exit() walks the fqdir rhashtable and
+flushes every fragment queue that is not yet complete using
+inet_frag_queue_flush(). That helper frees all the skbs queued on the
+fragment queue but does not set INET_FRAG_COMPLETE, and leaves
+q->fragments_tail and q->last_run_head pointing at the freed skbs.
+The queue itself stays in the rhashtable.
+
+fqdir_pre_exit() first lowers high_thresh to 0 to stop new queue lookups,
+but it cannot stop a fragment that already obtained the queue through
+inet_frag_find() earlier and stalled just before taking the queue lock.
+Once that fragment resumes after the flush and takes the queue lock,
+it passes the INET_FRAG_COMPLETE check and then dereferences the freed
+fragments_tail. inet_frag_queue_insert() reads FRAG_CB() and ->len of
+that pointer and, on the append path, writes ->next_frag, causing a
+slab use-after-free. IPv6, nf_conntrack_reasm6 and 6lowpan reassembly
+share the same flush path and are affected as well.
+
+Reset rb_fragments, fragments_tail and last_run_head in
+inet_frag_queue_flush() so a flushed queue no longer points at the
+freed skbs. A fragment that resumes after the flush and takes the
+queue lock then finds an empty queue and starts a new run instead of
+dereferencing the freed fragments_tail. ip_frag_reinit() already
+performed this reset after its own flush, so drop the now duplicate
+code there.
+
+Cc: stable@vger.kernel.org
+Fixes: 006a5035b495 ("inet: frags: flush pending skbs in fqdir_pre_exit()")
+Suggested-by: Eric Dumazet <edumazet@google.com>
+Signed-off-by: Hyunwoo Kim <imv4bel@gmail.com>
+Link: https://patch.msgid.link/ah6ukYq5G98LshdA@v4bel
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/ipv4/inet_fragment.c |    3 +++
+ net/ipv4/ip_fragment.c   |    3 ---
+ 2 files changed, 3 insertions(+), 3 deletions(-)
+
+--- a/net/ipv4/inet_fragment.c
++++ b/net/ipv4/inet_fragment.c
+@@ -329,6 +329,9 @@ void inet_frag_queue_flush(struct inet_f
+       reason = reason ?: SKB_DROP_REASON_FRAG_REASM_TIMEOUT;
+       sum = inet_frag_rbtree_purge(&q->rb_fragments, reason);
+       sub_frag_mem_limit(q->fqdir, sum);
++      q->rb_fragments = RB_ROOT;
++      q->fragments_tail = NULL;
++      q->last_run_head = NULL;
+ }
+ EXPORT_SYMBOL(inet_frag_queue_flush);
+--- a/net/ipv4/ip_fragment.c
++++ b/net/ipv4/ip_fragment.c
+@@ -265,9 +265,6 @@ static int ip_frag_reinit(struct ipq *qp
+       qp->q.flags = 0;
+       qp->q.len = 0;
+       qp->q.meat = 0;
+-      qp->q.rb_fragments = RB_ROOT;
+-      qp->q.fragments_tail = NULL;
+-      qp->q.last_run_head = NULL;
+       qp->iif = 0;
+       qp->ecn = 0;
diff --git a/queue-6.6/ksmbd-fix-use-after-free-of-a-deferred-file_lock-on-double-smb2_cancel.patch b/queue-6.6/ksmbd-fix-use-after-free-of-a-deferred-file_lock-on-double-smb2_cancel.patch
new file mode 100644 (file)
index 0000000..df1b270
--- /dev/null
@@ -0,0 +1,69 @@
+From f580d27e8928828693df44ba2db0fffdbe11dfea Mon Sep 17 00:00:00 2001
+From: Gil Portnoy <dddhkts1@gmail.com>
+Date: Mon, 1 Jun 2026 08:27:56 +0900
+Subject: ksmbd: fix use-after-free of a deferred file_lock on double SMB2_CANCEL
+
+From: Gil Portnoy <dddhkts1@gmail.com>
+
+commit f580d27e8928828693df44ba2db0fffdbe11dfea upstream.
+
+A deferred byte-range lock (an SMB2_LOCK that blocks) registers an async work on
+conn->async_requests via setup_async_work(), with cancel_fn =
+smb2_remove_blocked_lock and cancel_argv[0] pointing at the struct file_lock.
+
+When the request is cancelled, the worker frees the file_lock with
+locks_free_lock() and takes the cancelled early-exit, which "goto out"s and never
+reaches release_async_work() -- the only site that unlinks the work from
+conn->async_requests and clears cancel_fn/cancel_argv. The work therefore stays
+matchable on async_requests with a live cancel_fn pointing at the freed file_lock,
+until connection teardown finally runs release_async_work().
+
+smb2_cancel() fires cancel_fn unconditionally with no state guard, so a second
+SMB2_CANCEL for the same AsyncId, arriving in that window, re-runs
+smb2_remove_blocked_lock() on the freed file_lock -- a slab use-after-free:
+
+  BUG: KASAN: slab-use-after-free in __locks_delete_block
+    __locks_delete_block
+    locks_delete_block
+    ksmbd_vfs_posix_lock_unblock
+    smb2_remove_blocked_lock
+    smb2_cancel                 <- 2nd SMB2_CANCEL fires cancel_fn
+    handle_ksmbd_work
+  Allocated by ...: locks_alloc_lock <- smb2_lock
+  Freed by ...:     locks_free_lock  <- smb2_lock (cancelled branch)
+  ... cache file_lock_cache of size 192
+
+Reproduced on mainline with KASAN by an authenticated SMB client.
+
+Skip a work whose state is already KSMBD_WORK_CANCELLED so its cancel callback
+cannot be fired a second time.
+
+Cc: stable@vger.kernel.org
+Signed-off-by: Gil Portnoy <dddhkts1@gmail.com>
+Acked-by: Namjae Jeon <linkinjeon@kernel.org>
+Signed-off-by: Steve French <stfrench@microsoft.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ fs/smb/server/smb2pdu.c |   11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+--- a/fs/smb/server/smb2pdu.c
++++ b/fs/smb/server/smb2pdu.c
+@@ -7191,6 +7191,17 @@ int smb2_cancel(struct ksmbd_work *work)
+                           le64_to_cpu(hdr->Id.AsyncId))
+                               continue;
++                      /*
++                       * A cancelled deferred byte-range lock frees its
++                       * file_lock and takes the smb2_lock() early-exit that
++                       * skips release_async_work(), so the work stays on
++                       * conn->async_requests with a live cancel_fn pointing
++                       * at the freed file_lock.  Re-firing it on a second
++                       * SMB2_CANCEL is a use-after-free.
++                       */
++                      if (iter->state == KSMBD_WORK_CANCELLED)
++                              break;
++
+                       ksmbd_debug(SMB,
+                                   "smb2 with AsyncId %llu cancelled command = 0x%x\n",
+                                   le64_to_cpu(hdr->Id.AsyncId),
diff --git a/queue-6.6/mm-damon-ops-common-call-folio_test_lru-after-folio_get.patch b/queue-6.6/mm-damon-ops-common-call-folio_test_lru-after-folio_get.patch
new file mode 100644 (file)
index 0000000..859bb0b
--- /dev/null
@@ -0,0 +1,57 @@
+From d6b8b02a27b3dd09ec12144322b3dac46d9bc9ef Mon Sep 17 00:00:00 2001
+From: SeongJae Park <sj@kernel.org>
+Date: Mon, 25 May 2026 09:22:55 -0700
+Subject: mm/damon/ops-common: call folio_test_lru() after folio_get()
+
+From: SeongJae Park <sj@kernel.org>
+
+commit d6b8b02a27b3dd09ec12144322b3dac46d9bc9ef upstream.
+
+damon_get_folio() speculatively calls folio_test_lru() before
+folio_try_get().  The folio can get freed and reallocated to a tail page.
+In the case, VM_BUG_ON_PGFLAGS() in const_folio_flags() can be triggered.
+Remove the speculative call.
+
+Also mark folio_test_lru() check right after folio_try_get() success as no
+more unlikely.
+
+The race should be rare.  Also the problem can happen only if the kernel
+has enabled CONFIG_DEBUG_VM_PGFLAGS.  No real world report of this issue
+has been made so far.  This fix is based on only theoretical analysis.
+That said, a bug is a bug.  A similar issue was also fixed via commit
+3203b3ab0fcf ("mm/filemap: don't call folio_test_locked() without a
+reference in next_uptodate_folio()").  I don't expect this change will
+make a meaningful impact to DAMON performance in the real world, though I
+will be happy to be corrected from the real world reports.
+
+The issue was discovered [1] by Sashiko.
+
+
+Link: https://lore.kernel.org/20260525162256.8317-1-sj@kernel.org
+Link: https://lore.kernel.org/20260517234112.89245-1-sj@kernel.org [1]
+Fixes: 3f49584b262c ("mm/damon: implement primitives for the virtual memory address spaces")
+Signed-off-by: SeongJae Park <sj@kernel.org>
+Cc: Fernand Sieber <sieberf@amazon.com>
+Cc: Leonard Foerster <foersleo@amazon.de>
+Cc: Shakeel Butt <shakeel.butt@linux.dev>
+Cc: <stable@vger.kernel.org> # 5.15.x
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ mm/damon/ops-common.c |    4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/mm/damon/ops-common.c
++++ b/mm/damon/ops-common.c
+@@ -28,9 +28,9 @@ struct folio *damon_get_folio(unsigned l
+               return NULL;
+       folio = page_folio(page);
+-      if (!folio_test_lru(folio) || !folio_try_get(folio))
++      if (!folio_try_get(folio))
+               return NULL;
+-      if (unlikely(page_folio(page) != folio || !folio_test_lru(folio))) {
++      if (unlikely(page_folio(page) != folio) || !folio_test_lru(folio)) {
+               folio_put(folio);
+               folio = NULL;
+       }
diff --git a/queue-6.6/mptcp-allow-subflow-rcv-wnd-to-shrink.patch b/queue-6.6/mptcp-allow-subflow-rcv-wnd-to-shrink.patch
new file mode 100644 (file)
index 0000000..a1f3a84
--- /dev/null
@@ -0,0 +1,59 @@
+From da23be77e1292cd611e736c3aa17da633d7ddce7 Mon Sep 17 00:00:00 2001
+From: Paolo Abeni <pabeni@redhat.com>
+Date: Tue, 2 Jun 2026 22:14:11 +1000
+Subject: mptcp: allow subflow rcv wnd to shrink
+
+From: Paolo Abeni <pabeni@redhat.com>
+
+commit da23be77e1292cd611e736c3aa17da633d7ddce7 upstream.
+
+In MPTCP connection, the `window` field in the TCP header refers to the
+MPTCP-level rcv_nxt and it's right edge should not move backward. Such
+constraint is enforced at DSS option generation time.
+
+At the same time, the TCP stack ensures independently that the TCP-level
+rcv wnd right's edge does not move backward. That in turn causes artificial
+inflating of the MPTCP rcv window when the incoming data is acked at the
+TCP level and is OoO in the MPTCP sequence space (or lands in the backlog).
+
+As a consequence, the incoming traffic can exceed the receiver rcvbuf size
+even when the sender is not misbehaving.
+
+Prevent such scenario forcibly allowing the TCP subflow to shrink the
+TCP-level rcv wnd regardless of the current netns setting.
+
+Fixes: f3589be0c420 ("mptcp: never shrink offered window")
+Cc: stable@vger.kernel.org
+Signed-off-by: Paolo Abeni <pabeni@redhat.com>
+Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Link: https://patch.msgid.link/20260602-net-mptcp-misc-fixes-7-1-rc7-v2-4-856831229976@kernel.org
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/mptcp/options.c |    7 +++++++
+ 1 file changed, 7 insertions(+)
+
+--- a/net/mptcp/options.c
++++ b/net/mptcp/options.c
+@@ -567,6 +567,7 @@ static bool mptcp_established_options_ds
+ {
+       struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk);
+       struct mptcp_sock *msk = mptcp_sk(subflow->conn);
++      struct tcp_sock *tp = tcp_sk(sk);
+       unsigned int dss_size = 0;
+       struct mptcp_ext *mpext;
+       unsigned int ack_size;
+@@ -615,6 +616,12 @@ static bool mptcp_established_options_ds
+       if (dss_size == 0)
+               ack_size += TCPOLEN_MPTCP_DSS_BASE;
++      /* The caller is __tcp_transmit_skb(), and will compute the new rcv
++       * wnd soon: ensure that the window can shrink.
++       */
++      if (skb)
++              tp->rcv_wnd = tp->rcv_nxt - tp->rcv_wup;
++
+       dss_size += ack_size;
+       *size = ALIGN(dss_size, 4);
diff --git a/queue-6.6/mptcp-close-toctou-race-while-computing-rcv_wnd.patch b/queue-6.6/mptcp-close-toctou-race-while-computing-rcv_wnd.patch
new file mode 100644 (file)
index 0000000..280e826
--- /dev/null
@@ -0,0 +1,125 @@
+From 8ab24fdebc369c0dfb90f82c1650b1e66662bb45 Mon Sep 17 00:00:00 2001
+From: Paolo Abeni <pabeni@redhat.com>
+Date: Tue, 2 Jun 2026 22:14:10 +1000
+Subject: mptcp: close TOCTOU race while computing rcv_wnd
+
+From: Paolo Abeni <pabeni@redhat.com>
+
+commit 8ab24fdebc369c0dfb90f82c1650b1e66662bb45 upstream.
+
+The MPTCP output path access locklessly the MPTCP-level ack_seq
+in multiple times, using possibly different values for the data_ack
+in the DSS option and to compute the announced rcv wnd for the same
+packet.
+
+Refactor the cote to avoid inconsistencies which may confuse the
+peer. Also ensure that the MPTCP level rcv wnd is updated only when
+the egress packet actually contains a DSS ack.
+
+Fixes: fa3fe2b15031 ("mptcp: track window announced to peer")
+Cc: stable@vger.kernel.org
+Signed-off-by: Paolo Abeni <pabeni@redhat.com>
+Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Link: https://patch.msgid.link/20260602-net-mptcp-misc-fixes-7-1-rc7-v2-3-856831229976@kernel.org
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/mptcp/options.c |   36 ++++++++++++++++++------------------
+ 1 file changed, 18 insertions(+), 18 deletions(-)
+
+--- a/net/mptcp/options.c
++++ b/net/mptcp/options.c
+@@ -571,7 +571,6 @@ static bool mptcp_established_options_ds
+       struct mptcp_ext *mpext;
+       unsigned int ack_size;
+       bool ret = false;
+-      u64 ack_seq;
+       opts->csum_reqd = READ_ONCE(msk->csum_enabled);
+       mpext = skb ? mptcp_get_ext(skb) : NULL;
+@@ -602,14 +601,11 @@ static bool mptcp_established_options_ds
+               return ret;
+       }
+-      ack_seq = READ_ONCE(msk->ack_seq);
+       if (READ_ONCE(msk->use_64bit_ack)) {
+               ack_size = TCPOLEN_MPTCP_DSS_ACK64;
+-              opts->ext_copy.data_ack = ack_seq;
+               opts->ext_copy.ack64 = 1;
+       } else {
+               ack_size = TCPOLEN_MPTCP_DSS_ACK32;
+-              opts->ext_copy.data_ack32 = (uint32_t)ack_seq;
+               opts->ext_copy.ack64 = 0;
+       }
+       opts->ext_copy.use_ack = 1;
+@@ -1295,19 +1291,14 @@ bool mptcp_incoming_options(struct sock
+       return true;
+ }
+-static void mptcp_set_rwin(struct tcp_sock *tp, struct tcphdr *th)
++static u64 mptcp_set_rwin(struct mptcp_sock *msk, struct tcp_sock *tp,
++                        struct tcphdr *th, u64 ack_seq)
+ {
+       const struct sock *ssk = (const struct sock *)tp;
+-      struct mptcp_subflow_context *subflow;
+-      u64 ack_seq, rcv_wnd_old, rcv_wnd_new;
+-      struct mptcp_sock *msk;
++      u64 rcv_wnd_old, rcv_wnd_new;
+       u32 new_win;
+       u64 win;
+-      subflow = mptcp_subflow_ctx(ssk);
+-      msk = mptcp_sk(subflow->conn);
+-
+-      ack_seq = READ_ONCE(msk->ack_seq);
+       rcv_wnd_new = ack_seq + tp->rcv_wnd;
+       rcv_wnd_old = atomic64_read(&msk->rcv_wnd_sent);
+@@ -1359,7 +1350,7 @@ raise_win:
+ update_wspace:
+       WRITE_ONCE(msk->old_wspace, tp->rcv_wnd);
+-      subflow->rcv_wnd_sent = rcv_wnd_new;
++      return rcv_wnd_new;
+ }
+ static void mptcp_track_rwin(struct tcp_sock *tp)
+@@ -1471,13 +1462,25 @@ void mptcp_write_options(struct tcphdr *
+               *ptr++ = mptcp_option(MPTCPOPT_DSS, len, 0, flags);
+               if (mpext->use_ack) {
++                      struct mptcp_sock *msk;
++                      u64 ack_seq;
++
++                      /* DSS option is set only by mptcp_established_options,
++                       * the caller is __tcp_transmit_skb() and ssk is always
++                       * not NULL.
++                       */
++                      subflow = mptcp_subflow_ctx(ssk);
++                      msk = mptcp_sk(subflow->conn);
++                      ack_seq = READ_ONCE(msk->ack_seq);
+                       if (mpext->ack64) {
+-                              put_unaligned_be64(mpext->data_ack, ptr);
++                              put_unaligned_be64(ack_seq, ptr);
+                               ptr += 2;
+                       } else {
+-                              put_unaligned_be32(mpext->data_ack32, ptr);
++                              put_unaligned_be32(ack_seq, ptr);
+                               ptr += 1;
+                       }
++                      subflow->rcv_wnd_sent = mptcp_set_rwin(msk, tp, th,
++                                                             ack_seq);
+               }
+               if (mpext->use_map) {
+@@ -1705,9 +1708,6 @@ mp_capable_done:
+                       i += 4;
+               }
+       }
+-
+-      if (tp)
+-              mptcp_set_rwin(tp, th);
+ }
+ __be32 mptcp_get_reset_option(const struct sk_buff *skb)
diff --git a/queue-6.6/mptcp-fix-retransmission-loop-when-csum-is-enabled.patch b/queue-6.6/mptcp-fix-retransmission-loop-when-csum-is-enabled.patch
new file mode 100644 (file)
index 0000000..46ad464
--- /dev/null
@@ -0,0 +1,42 @@
+From d1918b36edcaed0ec4ef6888b2358c6b1ddcff47 Mon Sep 17 00:00:00 2001
+From: Paolo Abeni <pabeni@redhat.com>
+Date: Tue, 2 Jun 2026 22:14:09 +1000
+Subject: mptcp: fix retransmission loop when csum is enabled
+
+From: Paolo Abeni <pabeni@redhat.com>
+
+commit d1918b36edcaed0ec4ef6888b2358c6b1ddcff47 upstream.
+
+Sashiko noted that retransmission with csum enabled can actually
+transmit new data, but currently the relevant code does not update
+accordingly snd_nxt.
+
+The may cause incoming ack drop and an endless retransmission loop.
+
+Address the issue incrementing snd_nxt as needed.
+
+Fixes: 4e14867d5e91 ("mptcp: tune re-injections for csum enabled mode")
+Cc: stable@vger.kernel.org
+Signed-off-by: Paolo Abeni <pabeni@redhat.com>
+Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Link: https://patch.msgid.link/20260602-net-mptcp-misc-fixes-7-1-rc7-v2-2-856831229976@kernel.org
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/mptcp/protocol.c |    4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/net/mptcp/protocol.c
++++ b/net/mptcp/protocol.c
+@@ -2751,6 +2751,10 @@ static void __mptcp_retrans(struct sock
+       msk->bytes_retrans += len;
+       dfrag->already_sent = max(dfrag->already_sent, len);
++      /* With csum enabled retransmission can send new data. */
++      if (after64(dfrag->already_sent + dfrag->data_seq, msk->snd_nxt))
++              WRITE_ONCE(msk->snd_nxt, dfrag->already_sent + dfrag->data_seq);
++
+ reset_timer:
+       mptcp_check_and_set_pending(sk);
diff --git a/queue-6.6/mptcp-sockopt-check-timestamping-ret-value.patch b/queue-6.6/mptcp-sockopt-check-timestamping-ret-value.patch
new file mode 100644 (file)
index 0000000..ed1d1b6
--- /dev/null
@@ -0,0 +1,53 @@
+From 57132affbc89c02e1bf73fdf5724311bdc9a29da Mon Sep 17 00:00:00 2001
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+Date: Tue, 2 Jun 2026 22:14:14 +1000
+Subject: mptcp: sockopt: check timestamping ret value
+
+From: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+
+commit 57132affbc89c02e1bf73fdf5724311bdc9a29da upstream.
+
+sock_set_timestamping() can fail for different reasons. The returned
+value should then be checked.
+
+If sock_set_timestamping() fails for at least one subflow, the first
+error is now reported to the userspace, similar to what is done with
+other socket options.
+
+Fixes: 9061f24bf82e ("mptcp: sockopt: propagate timestamp request to subflows")
+Cc: stable@vger.kernel.org
+Reported-by: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
+Closes: https://lore.kernel.org/willemdebruijn.kernel.178a41a53d041@gmail.com
+Reviewed-by: Mat Martineau <martineau@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Link: https://patch.msgid.link/20260602-net-mptcp-misc-fixes-7-1-rc7-v2-7-856831229976@kernel.org
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/mptcp/sockopt.c |    8 ++++++--
+ 1 file changed, 6 insertions(+), 2 deletions(-)
+
+--- a/net/mptcp/sockopt.c
++++ b/net/mptcp/sockopt.c
+@@ -235,15 +235,19 @@ static int mptcp_setsockopt_sol_socket_t
+       mptcp_for_each_subflow(msk, subflow) {
+               struct sock *ssk = mptcp_subflow_tcp_sock(subflow);
++              int err;
+               lock_sock(ssk);
+-              sock_set_timestamping(ssk, optname, timestamping);
++              err = sock_set_timestamping(ssk, optname, timestamping);
+               release_sock(ssk);
++
++              if (err < 0 && ret == 0)
++                      ret = err;
+       }
+       release_sock(sk);
+-      return 0;
++      return ret;
+ }
+ static int mptcp_setsockopt_sol_socket_linger(struct mptcp_sock *msk, sockptr_t optval,
diff --git a/queue-6.6/pidfd-refuse-access-to-tasks-that-have-started-exiting-harder.patch b/queue-6.6/pidfd-refuse-access-to-tasks-that-have-started-exiting-harder.patch
new file mode 100644 (file)
index 0000000..b78e3de
--- /dev/null
@@ -0,0 +1,46 @@
+From 62c4d31d78294bd61cf3403626b789e854357177 Mon Sep 17 00:00:00 2001
+From: Christian Brauner <brauner@kernel.org>
+Date: Mon, 18 May 2026 10:32:11 +0200
+Subject: pidfd: refuse access to tasks that have started exiting harder
+
+From: Christian Brauner <brauner@kernel.org>
+
+commit 62c4d31d78294bd61cf3403626b789e854357177 upstream.
+
+The recent ptrace fix closed a hole where someone could rely on task->mm
+becoming NULL during do_exit() to bypass dumpability checks. This api
+here leans on on the very same check and so inherits the fix.
+
+But there is no good reason to let it succeed at all once the target has
+entered do_exit(). PF_EXITING is set by exit_signals() at the very top
+of do_exit(), before exit_mm() and exit_files() run. Once we observe it,
+the task is committed to dying and exit_files() will release the fdtable
+shortly.
+
+Fixes: 8649c322f75c ("pid: Implement pidfd_getfd syscall")
+Cc: stable@vger.kernel.org
+Link: https://patch.msgid.link/20260518-obgleich-petersilie-2d77ccccf9b9@brauner
+Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ kernel/pid.c |    8 +++++---
+ 1 file changed, 5 insertions(+), 3 deletions(-)
+
+--- a/kernel/pid.c
++++ b/kernel/pid.c
+@@ -675,10 +675,12 @@ static struct file *__pidfd_fget(struct
+       if (ret)
+               return ERR_PTR(ret);
+-      if (ptrace_may_access(task, PTRACE_MODE_ATTACH_REALCREDS))
+-              file = fget_task(task, fd);
+-      else
++      if (!ptrace_may_access(task, PTRACE_MODE_ATTACH_REALCREDS))
+               file = ERR_PTR(-EPERM);
++      else if (task->flags & PF_EXITING)
++              file = ERR_PTR(-ESRCH);
++      else
++              file = fget_task(task, fd);
+       up_read(&task->signal->exec_update_lock);
diff --git a/queue-6.6/rdma-srp-bound-srp_rsp-sense-copy-by-the-received-length.patch b/queue-6.6/rdma-srp-bound-srp_rsp-sense-copy-by-the-received-length.patch
new file mode 100644 (file)
index 0000000..05ce72c
--- /dev/null
@@ -0,0 +1,93 @@
+From 13e91fd076306f5d0cdfa14f53d69e37274723c4 Mon Sep 17 00:00:00 2001
+From: Michael Bommarito <michael.bommarito@gmail.com>
+Date: Tue, 2 Jun 2026 18:04:57 -0400
+Subject: RDMA/srp: bound SRP_RSP sense copy by the received length
+
+From: Michael Bommarito <michael.bommarito@gmail.com>
+
+commit 13e91fd076306f5d0cdfa14f53d69e37274723c4 upstream.
+
+srp_process_rsp() copies sense data from rsp->data + resp_data_len,
+where resp_data_len is the full 32-bit value supplied by the SRP target
+and is never checked against the number of bytes actually received
+(wc->byte_len). The copy length is bounded to SCSI_SENSE_BUFFERSIZE, so
+at most 96 bytes are copied, but the source offset is not bounded.
+
+A malicious or compromised SRP target on the InfiniBand/RoCE fabric that
+the initiator has logged into can return an SRP_RSP with
+SRP_RSP_FLAG_SNSVALID set and a large resp_data_len. The receive buffer
+is allocated at the target-chosen max_ti_iu_len, so the source of the
+sense copy lands past the bytes actually received; with resp_data_len
+near 0xFFFFFFFF it is gigabytes past the buffer and the read faults.
+
+Copy the sense data only if it has not been truncated, that is, only if
+the response header, the response data, and the sense region fit within
+the bytes actually received; otherwise drop the sense and log. The
+in-tree iSER and NVMe-RDMA receive paths already bound their parse by
+wc->byte_len; this brings ib_srp into line with them.
+
+Fixes: aef9ec39c47f ("IB: Add SCSI RDMA Protocol (SRP) initiator")
+Link: https://patch.msgid.link/r/20260602220457.2542840-1-michael.bommarito@gmail.com
+Cc: stable@vger.kernel.org
+Assisted-by: Claude:claude-opus-4-8
+Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
+Reviewed-by: Bart Van Assche <bvanassche@acm.org>
+Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/infiniband/ulp/srp/ib_srp.c |   30 ++++++++++++++++++++++++------
+ 1 file changed, 24 insertions(+), 6 deletions(-)
+
+--- a/drivers/infiniband/ulp/srp/ib_srp.c
++++ b/drivers/infiniband/ulp/srp/ib_srp.c
+@@ -1930,7 +1930,8 @@ static int srp_post_recv(struct srp_rdma
+       return ib_post_recv(ch->qp, &wr, NULL);
+ }
+-static void srp_process_rsp(struct srp_rdma_ch *ch, struct srp_rsp *rsp)
++static void srp_process_rsp(struct srp_rdma_ch *ch, struct srp_rsp *rsp,
++                          u32 byte_len)
+ {
+       struct srp_target_port *target = ch->target;
+       struct srp_request *req;
+@@ -1971,10 +1972,27 @@ static void srp_process_rsp(struct srp_r
+               scmnd->result = rsp->status;
+               if (rsp->flags & SRP_RSP_FLAG_SNSVALID) {
+-                      memcpy(scmnd->sense_buffer, rsp->data +
+-                             be32_to_cpu(rsp->resp_data_len),
+-                             min_t(int, be32_to_cpu(rsp->sense_data_len),
+-                                   SCSI_SENSE_BUFFERSIZE));
++                      u32 resp_len = be32_to_cpu(rsp->resp_data_len);
++                      u32 sense_len = be32_to_cpu(rsp->sense_data_len);
++
++                      /*
++                       * The sense data starts resp_data_len bytes past the
++                       * response data area; both lengths come from the
++                       * target-controlled response.  Copy the sense data
++                       * only if it has not been truncated, that is, only if
++                       * the full sense region fits within the bytes actually
++                       * received.  Otherwise the copy source would run past
++                       * the receive buffer (sized to the target-chosen
++                       * max_ti_iu_len), reading out of bounds.
++                       */
++                      if (sizeof(*rsp) + (u64)resp_len + sense_len <= byte_len)
++                              memcpy(scmnd->sense_buffer,
++                                     rsp->data + resp_len,
++                                     min(sense_len, SCSI_SENSE_BUFFERSIZE));
++                      else
++                              shost_printk(KERN_ERR, target->scsi_host,
++                                           "dropping truncated sense data (resp_data_len %u sense_data_len %u, %u bytes received)\n",
++                                           resp_len, sense_len, byte_len);
+               }
+               if (unlikely(rsp->flags & SRP_RSP_FLAG_DIUNDER))
+@@ -2084,7 +2102,7 @@ static void srp_recv_done(struct ib_cq *
+       switch (opcode) {
+       case SRP_RSP:
+-              srp_process_rsp(ch, iu->buf);
++              srp_process_rsp(ch, iu->buf, wc->byte_len);
+               break;
+       case SRP_CRED_REQ:
diff --git a/queue-6.6/selftests-mptcp-add-test-for-extra_subflows-underflow-on-userspace-pm.patch b/queue-6.6/selftests-mptcp-add-test-for-extra_subflows-underflow-on-userspace-pm.patch
new file mode 100644 (file)
index 0000000..05713a0
--- /dev/null
@@ -0,0 +1,38 @@
+From 06fd2bec7aebf393288e4b78924482fe170caabc Mon Sep 17 00:00:00 2001
+From: Tao Cui <cuitao@kylinos.cn>
+Date: Tue, 2 Jun 2026 22:14:13 +1000
+Subject: selftests: mptcp: add test for extra_subflows underflow on userspace PM
+
+From: Tao Cui <cuitao@kylinos.cn>
+
+commit 06fd2bec7aebf393288e4b78924482fe170caabc upstream.
+
+Add a test to verify that when userspace PM fails to create a subflow
+(e.g. using an unreachable address), the extra_subflows counter is not
+decremented below zero.
+
+Fixes: 77e4b94a3de6 ("mptcp: update userspace pm infos")
+Cc: stable@vger.kernel.org
+Signed-off-by: Tao Cui <cuitao@kylinos.cn>
+Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Link: https://patch.msgid.link/20260602-net-mptcp-misc-fixes-7-1-rc7-v2-6-856831229976@kernel.org
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ tools/testing/selftests/net/mptcp/mptcp_join.sh |    4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
++++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
+@@ -3774,6 +3774,10 @@ userspace_tests()
+               chk_rm_nr 0 1
+               chk_mptcp_info subflows 0 subflows 0
+               chk_subflows_total 1 1
++              # check counters are not affected by errors at creation time
++              userspace_pm_add_sf $ns2 10.0.12.2 10 2>/dev/null
++              chk_mptcp_info subflows 0 subflows 0
++              chk_subflows_total 1 1
+               kill_events_pids
+               mptcp_lib_kill_group_wait $tests_pid
+       fi
index 28774350e16b7f51f756530dbfef287759e0dbc0..a0472459ffa03929abd6670b399df7e2469d505f 100644 (file)
@@ -295,3 +295,31 @@ tracing-probes-point-the-error-offset-correctly-for-eprobe-argument-error.patch
 mmc-litex_mmc-use-div_round_up-for-more-accurate-clock-calculation.patch
 kvm-don-t-warn-if-memory-is-dirtied-without-a-vcpu-when-the-vm-is-dying.patch
 drm-i915-gem-fix-phys-bo-pread-pwrite-with-offset.patch
+ksmbd-fix-use-after-free-of-a-deferred-file_lock-on-double-smb2_cancel.patch
+xfrm-espintcp-do-not-reuse-an-in-progress-partial-send.patch
+usb-serial-io_ti-fix-heap-overflow-in-get_manuf_info.patch
+usb-serial-io_ti-fix-heap-overflow-in-build_i2c_fw_hdr.patch
+usb-serial-option-add-usb-id-for-dell-wireless-dw5826e-m.patch
+usb-serial-kl5kusb105-fix-bulk-out-buffer-overflow.patch
+alsa-timer-fix-uaf-at-snd_timer_user_params.patch
+drm-virtio-fix-dma_fence-refcount-leak-on-error-in-virtio_gpu_dma_fence_wait.patch
+drm-amd-display-reject-gpio_bitshift-32-in-bios_parser_get_gpio_pin_info.patch
+mm-damon-ops-common-call-folio_test_lru-after-folio_get.patch
+rdma-srp-bound-srp_rsp-sense-copy-by-the-received-length.patch
+zram-fix-use-after-free-in-zram_bvec_write_partial.patch
+udp-clear-skb-dev-before-running-a-sockmap-verdict.patch
+arm-socfpga-fix-of-node-refcount-leak-in-smp-setup.patch
+arm-9474-1-io-avoid-kasan-instrumentation-of-raw-halfword-i-o.patch
+arm-9475-1-entry-use-byte-load-for-kasan-vmap-stack-shadow.patch
+mptcp-fix-retransmission-loop-when-csum-is-enabled.patch
+mptcp-close-toctou-race-while-computing-rcv_wnd.patch
+mptcp-allow-subflow-rcv-wnd-to-shrink.patch
+mptcp-sockopt-check-timestamping-ret-value.patch
+selftests-mptcp-add-test-for-extra_subflows-underflow-on-userspace-pm.patch
+wifi-nl80211-reject-oversized-ema-rnr-lists.patch
+vsock-vmci-fix-sk_ack_backlog-leak-on-failed-handshake.patch
+asoc-fsl_sai-fix-32-slots-tdm-broken-by-integer-shift-ub-in-xmr-write.patch
+bnxt_en-fix-null-pointer-dereference.patch
+ib-isert-reject-login-pdus-shorter-than-iser_headers_len.patch
+inet-frags-fix-use-after-free-caused-by-the-fqdir_pre_exit-flush.patch
+pidfd-refuse-access-to-tasks-that-have-started-exiting-harder.patch
diff --git a/queue-6.6/udp-clear-skb-dev-before-running-a-sockmap-verdict.patch b/queue-6.6/udp-clear-skb-dev-before-running-a-sockmap-verdict.patch
new file mode 100644 (file)
index 0000000..262defa
--- /dev/null
@@ -0,0 +1,87 @@
+From 3c94f241f776562c489876ff506f366224565c21 Mon Sep 17 00:00:00 2001
+From: Sechang Lim <rhkrqnwk98@gmail.com>
+Date: Wed, 3 Jun 2026 16:27:33 +0000
+Subject: udp: clear skb->dev before running a sockmap verdict
+
+From: Sechang Lim <rhkrqnwk98@gmail.com>
+
+commit 3c94f241f776562c489876ff506f366224565c21 upstream.
+
+On the UDP receive path skb->dev is repurposed as dev_scratch (the
+truesize/state cache set by udp_set_dev_scratch()), through the
+union { struct net_device *dev; unsigned long dev_scratch; } in sk_buff.
+
+When a UDP socket is in a sockmap, sk_data_ready is
+sk_psock_verdict_data_ready(), which calls udp_read_skb() -> recv_actor()
+(sk_psock_verdict_recv) to run the attached SK_SKB verdict program in softirq.
+If that program calls a socket-lookup helper (bpf_sk_lookup_tcp/udp,
+bpf_skc_lookup_tcp), bpf_skc_lookup() does:
+
+       if (skb->dev)
+               caller_net = dev_net(skb->dev);
+
+skb->dev still holds the dev_scratch value (a non-NULL integer), so dev_net()
+dereferences it as a struct net_device * and the kernel takes a general
+protection fault on a non-canonical address in softirq:
+
+  Oops: general protection fault, probably for non-canonical address 0x1010000800004a0
+  CPU: 1 UID: 0 PID: 1406 Comm: syz.2.19 Not tainted 7.1.0-rc6 #1 PREEMPT(full)
+  RIP: 0010:bpf_skc_lookup net/core/filter.c:7033 [inline]
+  RIP: 0010:bpf_sk_lookup+0x45/0x160 net/core/filter.c:7047
+  Call Trace:
+   <IRQ>
+   bpf_prog_4675cb904b7071f8+0x12e/0x14e
+   bpf_prog_run_pin_on_cpu+0xc6/0x1f0
+   sk_psock_verdict_recv+0x1ba/0x350
+   udp_read_skb+0x31a/0x370
+   sk_psock_verdict_data_ready+0x2e3/0x600
+   __udp_enqueue_schedule_skb+0x4c8/0x650
+   udpv6_queue_rcv_one_skb+0x3ec/0x740
+   udp6_unicast_rcv_skb+0x11d/0x140
+   ip6_protocol_deliver_rcu+0x61e/0x950
+   ip6_input_finish+0xa9/0x150
+   NF_HOOK+0x286/0x2f0
+   ip6_input+0x117/0x220
+   NF_HOOK+0x286/0x2f0
+   __netif_receive_skb+0x85/0x200
+   process_backlog+0x374/0x9a0
+   __napi_poll+0x4f/0x1c0
+   net_rx_action+0x3b0/0x770
+   handle_softirqs+0x15a/0x460
+   do_softirq+0x57/0x80
+   </IRQ>
+
+The rmem charge that dev_scratch accounted for is released by skb_recv_udp() on
+dequeue, just above, so the scratch is dead by the time recv_actor() runs. Clear
+skb->dev so bpf_skc_lookup() falls back to sock_net(skb->sk), which
+skb_set_owner_sk_safe() set just above.
+
+Fixes: 965b57b469a5 ("net: Introduce a new proto_ops ->read_skb()")
+Cc: stable@vger.kernel.org
+Signed-off-by: Sechang Lim <rhkrqnwk98@gmail.com>
+Reviewed-by: Jiayuan Chen <jiayuan.chen@linux.dev>
+Reviewed-by: Eric Dumazet <edumazet@google.com>
+Link: https://patch.msgid.link/20260603162737.697215-1-rhkrqnwk98@gmail.com
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/ipv4/udp.c |    8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/net/ipv4/udp.c
++++ b/net/ipv4/udp.c
+@@ -1801,6 +1801,14 @@ try_again:
+       }
+       WARN_ON_ONCE(!skb_set_owner_sk_safe(skb, sk));
++
++      /*
++       * skb->dev still aliases the UDP rx dev_scratch (its charge was freed
++       * on dequeue above); a sockmap verdict program may deref it via
++       * bpf_sk_lookup_*(), so clear it -> bpf_skc_lookup() uses skb->sk
++       */
++      skb->dev = NULL;
++
+       return recv_actor(sk, skb);
+ }
+ EXPORT_SYMBOL(udp_read_skb);
diff --git a/queue-6.6/usb-serial-io_ti-fix-heap-overflow-in-build_i2c_fw_hdr.patch b/queue-6.6/usb-serial-io_ti-fix-heap-overflow-in-build_i2c_fw_hdr.patch
new file mode 100644 (file)
index 0000000..52b6a1f
--- /dev/null
@@ -0,0 +1,45 @@
+From 0fd2b00b2d3d05e3eaa13342b3dfb0fa85c226ae Mon Sep 17 00:00:00 2001
+From: Adrian Korwel <adriank20047@gmail.com>
+Date: Mon, 25 May 2026 09:58:32 -0500
+Subject: USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr()
+
+From: Adrian Korwel <adriank20047@gmail.com>
+
+commit 0fd2b00b2d3d05e3eaa13342b3dfb0fa85c226ae upstream.
+
+build_i2c_fw_hdr() allocates a fixed-size buffer of
+(16*1024 - 512) + sizeof(struct ti_i2c_firmware_rec) bytes, then
+copies le16_to_cpu(img_header->Length) bytes into it without
+validating that Length fits within the available space after the
+firmware record header.
+
+img_header->Length is a __le16 from the firmware file and can be
+up to 65535. check_fw_sanity() validates the total firmware size
+but not img_header->Length specifically.
+
+Fix by rejecting images where img_header->Length exceeds the
+available destination space.
+
+Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
+Cc: stable@vger.kernel.org
+Signed-off-by: Adrian Korwel <adriank20047@gmail.com>
+Signed-off-by: Johan Hovold <johan@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/usb/serial/io_ti.c |    5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/drivers/usb/serial/io_ti.c
++++ b/drivers/usb/serial/io_ti.c
+@@ -844,6 +844,11 @@ static int build_i2c_fw_hdr(u8 *header,
+       /* Pointer to fw_down memory image */
+       img_header = (struct ti_i2c_image_header *)&fw->data[4];
++      if (le16_to_cpu(img_header->Length) >
++                      buffer_size - sizeof(struct ti_i2c_firmware_rec)) {
++              kfree(buffer);
++              return -EINVAL;
++      }
+       memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
+               &fw->data[4 + sizeof(struct ti_i2c_image_header)],
+               le16_to_cpu(img_header->Length));
diff --git a/queue-6.6/usb-serial-io_ti-fix-heap-overflow-in-get_manuf_info.patch b/queue-6.6/usb-serial-io_ti-fix-heap-overflow-in-get_manuf_info.patch
new file mode 100644 (file)
index 0000000..1f902fc
--- /dev/null
@@ -0,0 +1,51 @@
+From 183c1076eca43bbb3e7bdf597456f91d81c73e74 Mon Sep 17 00:00:00 2001
+From: Adrian Korwel <adriank20047@gmail.com>
+Date: Mon, 25 May 2026 09:58:31 -0500
+Subject: USB: serial: io_ti: fix heap overflow in get_manuf_info()
+
+From: Adrian Korwel <adriank20047@gmail.com>
+
+commit 183c1076eca43bbb3e7bdf597456f91d81c73e74 upstream.
+
+get_manuf_info() reads le16_to_cpu(rom_desc->Size) bytes from the
+device I2C EEPROM into a buffer allocated with kmalloc_obj(), which
+is sizeof(struct edge_ti_manuf_descriptor) = 10 bytes.
+
+The Size field comes from the device and is only validated (in
+check_i2c_image()) to make sure the descriptor fits within
+TI_MAX_I2C_SIZE (16384 bytes), not against the destination buffer size.
+A malicious USB device can therefore set Size to any value up to 16377,
+causing a heap overflow of up to 16367 bytes when plugged into a host
+running this driver.
+
+valid_csum() is called after read_rom() and also iterates
+buffer[0..Size-1], compounding the out-of-bounds access.
+
+Fix by rejecting descriptors with unexpected length before calling
+read_rom().
+
+Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
+Cc: stable@vger.kernel.org
+Signed-off-by: Adrian Korwel <adriank20047@gmail.com>
+[ johan: amend commit message; also check for short descriptors ]
+Signed-off-by: Johan Hovold <johan@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/usb/serial/io_ti.c |    6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/usb/serial/io_ti.c
++++ b/drivers/usb/serial/io_ti.c
+@@ -773,6 +773,12 @@ static int get_manuf_info(struct edgepor
+       }
+       /* Read the descriptor data */
++      if (le16_to_cpu(rom_desc->Size) != sizeof(struct edge_ti_manuf_descriptor)) {
++              dev_err(dev, "unexpected Edge descriptor length: %u\n",
++                      le16_to_cpu(rom_desc->Size));
++              status = -EINVAL;
++              goto exit;
++      }
+       status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
+                                       le16_to_cpu(rom_desc->Size), buffer);
+       if (status)
diff --git a/queue-6.6/usb-serial-kl5kusb105-fix-bulk-out-buffer-overflow.patch b/queue-6.6/usb-serial-kl5kusb105-fix-bulk-out-buffer-overflow.patch
new file mode 100644 (file)
index 0000000..4253c97
--- /dev/null
@@ -0,0 +1,61 @@
+From 96d47e40bf9db4a9efd5c8fb53287a508d165f14 Mon Sep 17 00:00:00 2001
+From: HyeongJun An <sammiee5311@gmail.com>
+Date: Mon, 8 Jun 2026 18:09:26 +0900
+Subject: USB: serial: kl5kusb105: fix bulk-out buffer overflow
+
+From: HyeongJun An <sammiee5311@gmail.com>
+
+commit 96d47e40bf9db4a9efd5c8fb53287a508d165f14 upstream.
+
+klsi_105_prepare_write_buffer() is called by the generic write path
+with the bulk-out buffer and its size (bulk_out_size, 64 bytes). It
+stores a two-byte length header at the start of the buffer and copies
+the payload from the write fifo starting at buf + KLSI_HDR_LEN, but
+passes the full buffer size as the number of bytes to copy:
+
+  count = kfifo_out_locked(&port->write_fifo, buf + KLSI_HDR_LEN,
+                           size, &port->lock);
+
+When the fifo holds at least size bytes, size bytes are copied starting
+two bytes into the size-byte buffer, writing KLSI_HDR_LEN bytes past its
+end. Copy at most size - KLSI_HDR_LEN bytes instead, leaving room for
+the header as safe_serial already does.
+
+Writing bulk_out_size or more bytes to the tty triggers a slab
+out-of-bounds write, observed with KASAN by emulating the device with
+dummy_hcd and raw-gadget:
+
+  BUG: KASAN: slab-out-of-bounds in kfifo_copy_out+0x83/0xc0
+  Write of size 64 at addr ffff888112c62202 by task python3
+   kfifo_copy_out
+   klsi_105_prepare_write_buffer [kl5kusb105]
+   usb_serial_generic_write_start [usbserial]
+  Allocated by task 139:
+   usb_serial_probe [usbserial]
+  The buggy address is located 2 bytes inside of allocated 64-byte region
+
+The out-of-bounds write no longer occurs with this change applied.
+
+Fixes: 60b3013cdaf3 ("USB: kl5usb105: reimplement using generic framework")
+Cc: stable@vger.kernel.org
+Assisted-by: Claude:claude-opus-4-8
+Signed-off-by: HyeongJun An <sammiee5311@gmail.com>
+Signed-off-by: Johan Hovold <johan@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/usb/serial/kl5kusb105.c |    4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/usb/serial/kl5kusb105.c
++++ b/drivers/usb/serial/kl5kusb105.c
+@@ -331,8 +331,8 @@ static int klsi_105_prepare_write_buffer
+       unsigned char *buf = dest;
+       int count;
+-      count = kfifo_out_locked(&port->write_fifo, buf + KLSI_HDR_LEN, size,
+-                                                              &port->lock);
++      count = kfifo_out_locked(&port->write_fifo, buf + KLSI_HDR_LEN,
++                               size - KLSI_HDR_LEN, &port->lock);
+       put_unaligned_le16(count, buf);
+       return count + KLSI_HDR_LEN;
diff --git a/queue-6.6/usb-serial-option-add-usb-id-for-dell-wireless-dw5826e-m.patch b/queue-6.6/usb-serial-option-add-usb-id-for-dell-wireless-dw5826e-m.patch
new file mode 100644 (file)
index 0000000..ad79a2c
--- /dev/null
@@ -0,0 +1,71 @@
+From 1938fb9fe38c4f04a3f30bea44f8071c80a63be4 Mon Sep 17 00:00:00 2001
+From: Jack Wu <jackbb_wu@compal.com>
+Date: Thu, 4 Jun 2026 10:04:40 +0800
+Subject: USB: serial: option: add usb-id for Dell Wireless DW5826e-m
+
+From: Jack Wu <jackbb_wu@compal.com>
+
+commit 1938fb9fe38c4f04a3f30bea44f8071c80a63be4 upstream.
+
+Add support for Dell DW5826e-m with USB-id 0x413c:0x81ea
+
+T:  Bus=03 Lev=01 Prnt=01 Port=04 Cnt=01 Dev#=  8 Spd=480  MxCh= 0
+D:  Ver= 2.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
+P:  Vendor=413c ProdID=81ea Rev= 5.04
+S:  Manufacturer=DELL
+S:  Product=DW5826e-m Qualcomm Snapdragon X12 Global LTE-A
+S:  SerialNumber=358988870177734
+C:* #Ifs= 7 Cfg#= 1 Atr=a0 MxPwr=500mA
+A:  FirstIf#=12 IfCount= 2 Cls=02(comm.) Sub=0e Prot=00
+I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option
+E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=usbfs
+E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+E:  Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=60 Driver=option
+E:  Ad=84(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
+E:  Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+E:  Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
+E:  Ad=86(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
+E:  Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+E:  Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+I:* If#= 4 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
+E:  Ad=87(I) Atr=03(Int.) MxPS=  64 Ivl=32ms
+I:* If#=12 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=0e Prot=00 Driver=cdc_mbim
+E:  Ad=88(I) Atr=03(Int.) MxPS=  64 Ivl=32ms
+I:  If#=13 Alt= 0 #EPs= 0 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
+I:* If#=13 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
+E:  Ad=8e(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+E:  Ad=0f(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+
+Signed-off-by: Jack Wu <jackbb_wu@compal.com>
+Reviewed-by: Lars Melin <larsm17@gmail>
+Cc: stable@vger.kernel.org
+[ johan: reserve also interface 4 ]
+Signed-off-by: Johan Hovold <johan@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/usb/serial/option.c |    3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -202,6 +202,7 @@ static void option_instat_callback(struc
+ #define DELL_PRODUCT_5821E_ESIM                       0x81e0
+ #define DELL_PRODUCT_5829E_ESIM                       0x81e4
+ #define DELL_PRODUCT_5829E                    0x81e6
++#define DELL_PRODUCT_5826E_ESIM                       0x81ea
+ #define DELL_PRODUCT_FM101R_ESIM              0x8213
+ #define DELL_PRODUCT_FM101R                   0x8215
+@@ -1123,6 +1124,8 @@ static const struct usb_device_id option
+         .driver_info = RSVD(0) | RSVD(6) },
+       { USB_DEVICE(DELL_VENDOR_ID, DELL_PRODUCT_5829E_ESIM),
+         .driver_info = RSVD(0) | RSVD(6) },
++      { USB_DEVICE_INTERFACE_CLASS(DELL_VENDOR_ID, DELL_PRODUCT_5826E_ESIM, 0xff),
++        .driver_info = RSVD(1) | RSVD(4) },
+       { USB_DEVICE_INTERFACE_CLASS(DELL_VENDOR_ID, DELL_PRODUCT_FM101R, 0xff) },
+       { USB_DEVICE_INTERFACE_CLASS(DELL_VENDOR_ID, DELL_PRODUCT_FM101R_ESIM, 0xff) },
+       { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_E100A) },   /* ADU-E100, ADU-310 */
diff --git a/queue-6.6/vsock-vmci-fix-sk_ack_backlog-leak-on-failed-handshake.patch b/queue-6.6/vsock-vmci-fix-sk_ack_backlog-leak-on-failed-handshake.patch
new file mode 100644 (file)
index 0000000..fd0be61
--- /dev/null
@@ -0,0 +1,53 @@
+From c05fa14db43ebef3bd862ca9d073981c0358b3f0 Mon Sep 17 00:00:00 2001
+From: Raf Dickson <rafdog35@gmail.com>
+Date: Tue, 26 May 2026 10:43:56 +0000
+Subject: vsock/vmci: fix sk_ack_backlog leak on failed handshake
+
+From: Raf Dickson <rafdog35@gmail.com>
+
+commit c05fa14db43ebef3bd862ca9d073981c0358b3f0 upstream.
+
+When vmci_transport_recv_connecting_server() returns an error,
+vmci_transport_recv_listen() calls vsock_remove_pending() but never
+calls sk_acceptq_removed(). This leaves sk_ack_backlog incremented
+permanently.
+
+Repeated handshake failures (malformed packets, queue pair alloc
+failure, event subscribe failure) cause sk_ack_backlog to climb
+toward sk_max_ack_backlog. Once it reaches the limit the listener
+permanently refuses all new connections with -ECONNREFUSED, a
+silent denial of service requiring a process restart to recover.
+
+The two existing sk_acceptq_removed() calls in af_vsock.c do not
+cover this path: line 764 checks vsock_is_pending() which returns
+false after vsock_remove_pending(), and line 1889 is only reached
+on successful accept().
+
+Fix by balancing sk_acceptq_added() with sk_acceptq_removed() on
+the error path.
+
+Fixes: d021c344051a ("VSOCK: Introduce VM Sockets")
+Cc: stable@vger.kernel.org
+Signed-off-by: Raf Dickson <rafdog35@gmail.com>
+Acked-by: Stefano Garzarella <sgarzare@redhat.com>
+Link: https://patch.msgid.link/20260526104356.469928-1-rafdog35@gmail.com
+Signed-off-by: Paolo Abeni <pabeni@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/vmw_vsock/vmci_transport.c |    4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- a/net/vmw_vsock/vmci_transport.c
++++ b/net/vmw_vsock/vmci_transport.c
+@@ -972,8 +972,10 @@ static int vmci_transport_recv_listen(st
+                       err = -EINVAL;
+               }
+-              if (err < 0)
++              if (err < 0) {
+                       vsock_remove_pending(sk, pending);
++                      sk_acceptq_removed(sk);
++              }
+               release_sock(pending);
+               vmci_transport_release_pending(pending);
diff --git a/queue-6.6/wifi-nl80211-reject-oversized-ema-rnr-lists.patch b/queue-6.6/wifi-nl80211-reject-oversized-ema-rnr-lists.patch
new file mode 100644 (file)
index 0000000..7c2580a
--- /dev/null
@@ -0,0 +1,45 @@
+From 4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1 Mon Sep 17 00:00:00 2001
+From: Yuqi Xu <xuyuqiabc@gmail.com>
+Date: Fri, 29 May 2026 23:25:37 +0800
+Subject: wifi: nl80211: reject oversized EMA RNR lists
+
+From: Yuqi Xu <xuyuqiabc@gmail.com>
+
+commit 4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1 upstream.
+
+nl80211_parse_rnr_elems() stores the parsed element count in a
+u8-backed cfg80211_rnr_elems::cnt field and uses that count to size
+the flexible array allocation.
+
+Reject nested NL80211_ATTR_EMA_RNR_ELEMS input once the count reaches
+255, before incrementing it again. This keeps the parser aligned with
+the data structure it fills and matches the existing bound check used
+by nl80211_parse_mbssid_elems().
+
+Fixes: dbbb27e183b1 ("cfg80211: support RNR for EMA AP")
+Cc: stable@kernel.org
+Reported-by: Yuan Tan <yuantan098@gmail.com>
+Reported-by: Zhengchuan Liang <zcliangcn@gmail.com>
+Reported-by: Xin Liu <bird@lzu.edu.cn>
+Assisted-by: Codex:gpt-5.4
+Signed-off-by: Yuqi Xu <xuyuqiabc@gmail.com>
+Signed-off-by: Ren Wei <n05ec@lzu.edu.cn>
+Link: https://patch.msgid.link/20260529152542.1412734-1-n05ec@lzu.edu.cn
+Signed-off-by: Johannes Berg <johannes.berg@intel.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/wireless/nl80211.c |    3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/net/wireless/nl80211.c
++++ b/net/wireless/nl80211.c
+@@ -5498,6 +5498,9 @@ nl80211_parse_rnr_elems(struct wiphy *wi
+               if (ret)
+                       return ERR_PTR(ret);
++              if (num_elems >= 255)
++                      return ERR_PTR(-EINVAL);
++
+               num_elems++;
+       }
diff --git a/queue-6.6/xfrm-espintcp-do-not-reuse-an-in-progress-partial-send.patch b/queue-6.6/xfrm-espintcp-do-not-reuse-an-in-progress-partial-send.patch
new file mode 100644 (file)
index 0000000..82b8472
--- /dev/null
@@ -0,0 +1,59 @@
+From c381039ade2e161ab08c0eda73c4f8b9a7115928 Mon Sep 17 00:00:00 2001
+From: Wyatt Feng <bronzed_45_vested@icloud.com>
+Date: Wed, 3 Jun 2026 00:46:27 +0800
+Subject: xfrm: espintcp: do not reuse an in-progress partial send
+
+From: Wyatt Feng <bronzed_45_vested@icloud.com>
+
+commit c381039ade2e161ab08c0eda73c4f8b9a7115928 upstream.
+
+espintcp keeps a single in-flight transmit in ctx->partial.
+Before building a new sk_msg, espintcp_sendmsg() first tries to flush
+that state through espintcp_push_msgs().
+
+For blocking callers, espintcp_push_msgs() may return success even when
+the previous partial send is still pending. espintcp_sendmsg() would
+then reinitialize emsg->skmsg and reuse ctx->partial while the old
+transfer still owns that state.
+
+Do not rebuild the send message when ctx->partial is still in progress.
+If espintcp_push_msgs() returns with emsg->len still set, fail the new
+send instead of overwriting the live partial state.
+
+This is a memory-safety fix: reusing the live partial-send state can
+leave a stale offset attached to a new sk_msg and lead to an out-of-
+bounds read in the send path.
+
+tcp_sendmsg_locked() already handles waiting for send buffer memory, so
+the fix here is just to preserve espintcp's one-message-at-a-time
+transmit state.
+
+Fixes: e27cca96cd68 ("xfrm: add espintcp (RFC 8229)")
+Cc: stable@kernel.org
+Reported-by: Yuan Tan <yuantan098@gmail.com>
+Reported-by: Yifan Wu <yifanwucs@gmail.com>
+Reported-by: Juefei Pu <tomapufckgml@gmail.com>
+Reported-by: Zhengchuan Liang <zcliangcn@gmail.com>
+Reported-by: Xin Liu <bird@lzu.edu.cn>
+Assisted-by: Codex:GPT-5.4
+Signed-off-by: Wyatt Feng <bronzed_45_vested@icloud.com>
+Signed-off-by: Ren Wei <n05ec@lzu.edu.cn>
+Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/xfrm/espintcp.c |    4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/net/xfrm/espintcp.c
++++ b/net/xfrm/espintcp.c
+@@ -347,6 +347,10 @@ static int espintcp_sendmsg(struct sock
+                       err = -ENOBUFS;
+               goto unlock;
+       }
++      if (emsg->len) {
++              err = -ENOBUFS;
++              goto unlock;
++      }
+       sk_msg_init(&emsg->skmsg);
+       while (1) {
diff --git a/queue-6.6/zram-fix-use-after-free-in-zram_bvec_write_partial.patch b/queue-6.6/zram-fix-use-after-free-in-zram_bvec_write_partial.patch
new file mode 100644 (file)
index 0000000..855e29e
--- /dev/null
@@ -0,0 +1,47 @@
+From 732fd9f0b9c1cdc6dfd77162ded60df005182cc0 Mon Sep 17 00:00:00 2001
+From: Cunlong Li <shenxiaogll@gmail.com>
+Date: Thu, 28 May 2026 10:48:44 +0800
+Subject: zram: fix use-after-free in zram_bvec_write_partial()
+
+From: Cunlong Li <shenxiaogll@gmail.com>
+
+commit 732fd9f0b9c1cdc6dfd77162ded60df005182cc0 upstream.
+
+zram_read_page() picks the sync or async backing device read path based on
+whether the parent bio is NULL.  zram_bvec_write_partial() passes its
+parent bio down, so for ZRAM_WB slots the read is dispatched
+asynchronously and zram_read_page() returns 0 while the bio is still in
+flight.  The caller then runs memcpy_from_bvec(), zram_write_page() and
+__free_page() on the buffer, leaving the async read to write into a freed
+page.
+
+zram_bvec_read_partial() was switched to NULL in commit 4e3c87b9421d
+("zram: fix synchronous reads") for the same reason; the write_partial
+counterpart was missed.
+
+Link: https://lore.kernel.org/20260528-zram-v3-1-cab86eef8764@gmail.com
+Fixes: 8e654f8fbff5 ("zram: read page from backing device")
+Reviewed-by: Christoph Hellwig <hch@lst.de>
+Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
+Signed-off-by: Cunlong Li <shenxiaogll@gmail.com>
+Cc: Jens Axboe <axboe@kernel.dk>
+Cc: Minchan Kim <minchan@kernel.org>
+Cc: Yisheng Xie <xieyisheng1@huawei.com>
+Cc: <stable@vger.kernel.org>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/block/zram/zram_drv.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/block/zram/zram_drv.c
++++ b/drivers/block/zram/zram_drv.c
+@@ -1569,7 +1569,7 @@ static int zram_bvec_write_partial(struc
+       if (!page)
+               return -ENOMEM;
+-      ret = zram_read_page(zram, page, index, bio);
++      ret = zram_read_page(zram, page, index, NULL);
+       if (!ret) {
+               memcpy_from_bvec(page_address(page) + offset, bvec);
+               ret = zram_write_page(zram, page, index);