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| author | Dongliang Mu <mudongliangabcd@gmail.com> | 2022-09-22 21:48:44 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-10-26 13:19:41 +0200 |
| commit | f589b667567fde4f81d6e6c40f42b9f2224690ea (patch) | |
| tree | 9091d0ae6d9fdd65b5303613c364f8b5ca69cc56 /mm/slab_common.c | |
| parent | 366a2b3110c69f919fb3277acc1a0bb8cd8a8dbd (diff) | |
| download | linux-stable-f589b667567fde4f81d6e6c40f42b9f2224690ea.tar.gz linux-stable-f589b667567fde4f81d6e6c40f42b9f2224690ea.tar.bz2 linux-stable-f589b667567fde4f81d6e6c40f42b9f2224690ea.zip | |
usb: idmouse: fix an uninit-value in idmouse_open
[ Upstream commit bce2b0539933e485d22d6f6f076c0fcd6f185c4c ]
In idmouse_create_image, if any ftip_command fails, it will
go to the reset label. However, this leads to the data in
bulk_in_buffer[HEADER..IMGSIZE] uninitialized. And the check
for valid image incurs an uninitialized dereference.
Fix this by moving the check before reset label since this
check only be valid if the data after bulk_in_buffer[HEADER]
has concrete data.
Note that this is found by KMSAN, so only kernel compilation
is tested.
Reported-by: syzbot+79832d33eb89fb3cd092@syzkaller.appspotmail.com
Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
Link: https://lore.kernel.org/r/20220922134847.1101921-1-dzm91@hust.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'mm/slab_common.c')
0 files changed, 0 insertions, 0 deletions