diff options
| author | Zhang Shurong | 2023-05-07 15:52:47 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab | 2023-05-14 06:30:03 +0100 |
| commit | aa4a447b81b84f69c1a89ad899df157f386d7636 (patch) | |
| tree | 51a5b1024a8acbbfa51c448315b8c0d5c0051df7 /kernel | |
| parent | dff919090155fb22679869e8469168f270dcd97f (diff) | |
media: dvb-usb-v2: rtl28xxu: fix null-ptr-deref in rtl28xxu_i2c_xfer
In rtl28xxu_i2c_xfer, msg is controlled by user. When msg[i].buf
is null and msg[i].len is zero, former checks on msg[i].buf would be
passed. Malicious data finally reach rtl28xxu_i2c_xfer. If accessing
msg[i].buf[0] without sanity check, null ptr deref would happen.
We add check on msg[i].len to prevent crash.
Similar commit:
commit 0ed554fd769a
("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")
Link: https://lore.kernel.org/linux-media/tencent_3623572106754AC2F266B316798B0F6CCA05@qq.com
Signed-off-by: Zhang Shurong <zhang_shurong@foxmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions