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| author |   Wei Chen <harperchen1110@gmail.com> | 2023-03-10 16:56:04 +0000 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@kernel.org> | 2023-05-14 06:29:42 +0100 |
| commit | 858e97d7956d17a2cb56a9413468704a4d5abfe1 (patch) | |
| tree | 6d521428648105a5149e8aeaead11faa3a4f2006 /include/linux/amba/git:/git.zx2c4.com/ssh:/git@git.zx2c4.com | |
| parent | media: netup_unidvb: fix use-after-free at del_timer() (diff) | |
media: dvb-usb: az6027: fix three null-ptr-deref in az6027_i2c_xfer()
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>
Diffstat (limited to 'include/linux/amba/git:/git.zx2c4.com/ssh:/git@git.zx2c4.com')
0 files changed, 0 insertions, 0 deletions