diff options
| author | Zhang Shurong <zhang_shurong@foxmail.com> | 2023-07-06 00:06:54 +0800 |
|---|---|---|
| committer | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2023-07-19 12:57:48 +0200 |
| commit | 7bf744f2de0a848fb1d717f5831b03db96feae89 (patch) | |
| tree | d62431aaaff34aeea3b4811bf2200ec2ee75a5fe /drivers/acpi | |
| parent | d5b3214a9200678cdf3514867aea62df39d989b0 (diff) | |
media: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer
In af9035_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 af9035_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/acpi')
0 files changed, 0 insertions, 0 deletions