diff options
| author | Wei Chen <harperchen1110@gmail.com> | 2023-03-10 16:56:04 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-06-09 10:32:23 +0200 |
| commit | 4b61ee116a3ce5eb9dfdf9b865669b0dd9a74de2 (patch) | |
| tree | 8b15ec9d1643003b7ef36b303a3c301855d4c3cc /fs/fs_pin.c | |
| parent | 5e9ad9962f2abf17797c0273ea50c92c3b880c5d (diff) | |
| download | linux-stable-4b61ee116a3ce5eb9dfdf9b865669b0dd9a74de2.tar.gz linux-stable-4b61ee116a3ce5eb9dfdf9b865669b0dd9a74de2.tar.bz2 linux-stable-4b61ee116a3ce5eb9dfdf9b865669b0dd9a74de2.zip | |
media: dvb-usb: az6027: fix three null-ptr-deref in az6027_i2c_xfer()
[ Upstream commit 858e97d7956d17a2cb56a9413468704a4d5abfe1 ]
In az6027_i2c_xfer, msg is controlled by user. When msg[i].buf is null,
commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in
az6027_i2c_xfer()") fix the null-ptr-deref bug when msg[i].addr is 0x99.
However, null-ptr-deref also happens when msg[i].addr is 0xd0 and 0xc0.
We add check on msg[i].len to prevent null-ptr-deref.
Link: https://lore.kernel.org/linux-media/20230310165604.3093483-1-harperchen1110@gmail.com
Signed-off-by: Wei Chen <harperchen1110@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs/fs_pin.c')
0 files changed, 0 insertions, 0 deletions