qemu: fix CVE-2022-26354

Signed-off-by: Sakib Sajal <sakib.sajal@windriver.com>
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>

diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc
index aa372810cec194ba6c47a00dde97036f8b09a702..934e5ee9323baf14ccbc354b90d69fd40a267792 100644 (file)
--- a/meta/recipes-devtools/qemu/qemu.inc
+++ b/meta/recipes-devtools/qemu/qemu.inc
@@ -77,6 +77,7 @@ SRC_URI = "https://download.qemu.org/${BPN}-${PV}.tar.xz \
            file://CVE-2021-20196_2.patch \
            file://CVE-2021-4145_1.patch \
            file://CVE-2021-4145_2.patch \
+           file://CVE-2022-26354.patch \
            "
 UPSTREAM_CHECK_REGEX = "qemu-(?P<pver>\d+(\.\d+)+)\.tar"
 

diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2022-26354.patch b/meta/recipes-devtools/qemu/qemu/CVE-2022-26354.patch
new file mode 100644 (file)
index 0000000..ae8c490
--- /dev/null
+++ b/meta/recipes-devtools/qemu/qemu/CVE-2022-26354.patch
@@ -0,0 +1,59 @@
+From 1c53fa2c574ebacf8bb20c73e35ae4b96dcf0476 Mon Sep 17 00:00:00 2001
+From: Stefano Garzarella <sgarzare@redhat.com>
+Date: Mon, 28 Feb 2022 10:50:58 +0100
+Subject: [PATCH 3/3] vhost-vsock: detach the virqueue element in case of error
+
+In vhost_vsock_common_send_transport_reset(), if an element popped from
+the virtqueue is invalid, we should call virtqueue_detach_element() to
+detach it from the virtqueue before freeing its memory.
+
+Fixes: fc0b9b0e1c ("vhost-vsock: add virtio sockets device")
+Fixes: CVE-2022-26354
+Cc: qemu-stable@nongnu.org
+Reported-by: VictorV <vv474172261@gmail.com>
+Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
+Message-Id: <20220228095058.27899-1-sgarzare@redhat.com>
+Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
+Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
+Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
+
+Upstream-Status: Backport [8d1b247f3748ac4078524130c6d7ae42b6140aaf]
+Signed-off-by: Sakib Sajal <sakib.sajal@windriver.com>
+---
+ hw/virtio/vhost-vsock-common.c | 10 +++++++---
+ 1 file changed, 7 insertions(+), 3 deletions(-)
+
+diff --git a/hw/virtio/vhost-vsock-common.c b/hw/virtio/vhost-vsock-common.c
+index 5b2ebf349..45ea58c3a 100644
+--- a/hw/virtio/vhost-vsock-common.c
++++ b/hw/virtio/vhost-vsock-common.c
+@@ -129,19 +129,23 @@ static void vhost_vsock_common_send_transport_reset(VHostVSockCommon *vvc)
+     if (elem->out_num) {
+         error_report("invalid vhost-vsock event virtqueue element with "
+                      "out buffers");
+-        goto out;
++        goto err;
+     }
+ 
+     if (iov_from_buf(elem->in_sg, elem->in_num, 0,
+                      &event, sizeof(event)) != sizeof(event)) {
+         error_report("vhost-vsock event virtqueue element is too short");
+-        goto out;
++        goto err;
+     }
+ 
+     virtqueue_push(vq, elem, sizeof(event));
+     virtio_notify(VIRTIO_DEVICE(vvc), vq);
+ 
+-out:
++    g_free(elem);
++    return;
++
++err:
++    virtqueue_detach_element(vq, elem, 0);
+     g_free(elem);
+ }
+ 
+-- 
+2.33.0
+