diff options
| author | Zhang Shurong <zhang_shurong@foxmail.com> | 2023-07-10 13:32:13 +0800 |
|---|---|---|
| committer | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2023-07-19 12:57:50 +0200 |
| commit | b97719a66970601cd3151a3e2020f4454a1c4ff6 (patch) | |
| tree | 6e9a8ca64b280d1bc81997f344301afdbdfb77cf /drivers/media/rc/sunxi-cir.c | |
| parent | f7e0f1f52424bfdfa8efd6eb6496d5d6244ee3bb (diff) | |
| download | lwn-b97719a66970601cd3151a3e2020f4454a1c4ff6.tar.gz lwn-b97719a66970601cd3151a3e2020f4454a1c4ff6.zip | |
media: dvb-usb-v2: gl861: Fix null-ptr-deref in gl861_i2c_master_xfer
In gl861_i2c_master_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 gl861_i2c_master_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()")
Signed-off-by: Zhang Shurong <zhang_shurong@foxmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Diffstat (limited to 'drivers/media/rc/sunxi-cir.c')
0 files changed, 0 insertions, 0 deletions