From 066c9bddf09915417f1a1a893459d8d12d16f669 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Fri, 9 Jun 2017 12:26:56 +0200 Subject: [PATCH] 3.18-stable patches added patches: serial-ifx6x60-fix-use-after-free-on-module-unload.patch --- ...-fix-use-after-free-on-module-unload.patch | 35 +++++++++++++++++++ queue-3.18/series | 1 + 2 files changed, 36 insertions(+) create mode 100644 queue-3.18/serial-ifx6x60-fix-use-after-free-on-module-unload.patch diff --git a/queue-3.18/serial-ifx6x60-fix-use-after-free-on-module-unload.patch b/queue-3.18/serial-ifx6x60-fix-use-after-free-on-module-unload.patch new file mode 100644 index 00000000000..424137d2486 --- /dev/null +++ b/queue-3.18/serial-ifx6x60-fix-use-after-free-on-module-unload.patch @@ -0,0 +1,35 @@ +From 1e948479b3d63e3ac0ecca13cbf4921c7d17c168 Mon Sep 17 00:00:00 2001 +From: Johan Hovold +Date: Wed, 26 Apr 2017 12:24:21 +0200 +Subject: serial: ifx6x60: fix use-after-free on module unload + +From: Johan Hovold + +commit 1e948479b3d63e3ac0ecca13cbf4921c7d17c168 upstream. + +Make sure to deregister the SPI driver before releasing the tty driver +to avoid use-after-free in the SPI remove callback where the tty +devices are deregistered. + +Fixes: 72d4724ea54c ("serial: ifx6x60: Add modem power off function in the platform reboot process") +Cc: Jun Chen +Signed-off-by: Johan Hovold +Signed-off-by: Greg Kroah-Hartman + +--- + drivers/tty/serial/ifx6x60.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/drivers/tty/serial/ifx6x60.c ++++ b/drivers/tty/serial/ifx6x60.c +@@ -1379,9 +1379,9 @@ static struct spi_driver ifx_spi_driver + static void __exit ifx_spi_exit(void) + { + /* unregister */ ++ spi_unregister_driver((void *)&ifx_spi_driver); + tty_unregister_driver(tty_drv); + put_tty_driver(tty_drv); +- spi_unregister_driver((void *)&ifx_spi_driver); + unregister_reboot_notifier(&ifx_modem_reboot_notifier_block); + } + diff --git a/queue-3.18/series b/queue-3.18/series index 693e9fd5742..eb862ca9029 100644 --- a/queue-3.18/series +++ b/queue-3.18/series @@ -5,3 +5,4 @@ tcp-disallow-cwnd-undo-when-switching-congestion-control.patch ipv6-fix-leak-in-ipv6_gso_segment.patch net-ping-do-not-abuse-udp_poll.patch net-ethoc-enable-napi-before-poll-may-be-scheduled.patch +serial-ifx6x60-fix-use-after-free-on-module-unload.patch -- 2.47.3