OpenCloudOS-Kernel/drivers/isdn
Zou Wei 009fc857c5 mISDN: fix possible use-after-free in HFC_cleanup()
This module's remove path calls del_timer(). However, that function
does not wait until the timer handler finishes. This means that the
timer handler may still be running after the driver's remove function
has finished, which would result in a use-after-free.

Fix by calling del_timer_sync(), which makes sure the timer handler
has finished, and unable to re-schedule itself.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-05-11 16:12:46 -07:00
..
capi proc: mandate ->proc_lseek in "struct proc_ops" 2021-05-06 19:24:11 -07:00
hardware mISDN: fix possible use-after-free in HFC_cleanup() 2021-05-11 16:12:46 -07:00
mISDN mISDN: Use LIST_HEAD() for list_head 2021-03-30 13:34:42 -07:00
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile isdn: capi: dead code removal 2019-12-11 09:12:38 +01:00