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| author | Li Jinlin <lijinlin3@huawei.com> | 2021-09-07 20:12:42 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-26 14:09:01 +0200 |
| commit | 23dfb959c6cbb8346a5143f44a970373fcb4ce8f (patch) | |
| tree | 64b2100e18cc20296c4495a541e4b514fa068e0c /kernel/debug | |
| parent | a2551d0a29e937515a9711b604d88cd1a31c386f (diff) | |
blk-throttle: fix UAF by deleteing timer in blk_throtl_exit()
[ Upstream commit 884f0e84f1e3195b801319c8ec3d5774e9bf2710 ]
The pending timer has been set up in blk_throtl_init(). However, the
timer is not deleted in blk_throtl_exit(). This means that the timer
handler may still be running after freeing the timer, which would
result in a use-after-free.
Fix by calling del_timer_sync() to delete the timer in blk_throtl_exit().
Signed-off-by: Li Jinlin <lijinlin3@huawei.com>
Link: https://lore.kernel.org/r/20210907121242.2885564-1-lijinlin3@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel/debug')
0 files changed, 0 insertions, 0 deletions