diff options
| author | Wei Chen | 2023-03-13 09:50:08 +0000 |
|---|---|---|
| committer | Mauro Carvalho Chehab | 2023-05-14 06:30:06 +0100 |
| commit | 9ded5bd2a49ce3015b7c936743eec0a0e6e11f0c (patch) | |
| tree | fee0471a252bb8933743cea07d4111c8a25085f7 /fs/nls | |
| parent | aa4a447b81b84f69c1a89ad899df157f386d7636 (diff) | |
media: dvb-usb: digitv: fix null-ptr-deref in digitv_i2c_xfer()
In digitv_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 digitv_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/20230313095008.1039689-1-harperchen1110@gmail.com
Signed-off-by: Wei Chen <harperchen1110@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'fs/nls')
0 files changed, 0 insertions, 0 deletions