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| author | Zhang Shurong <zhang_shurong@foxmail.com> | 2023-07-08 12:22:52 +0200 |
|---|---|---|
| committer | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2023-07-19 12:57:50 +0200 |
| commit | 5ae544d94abc8ff77b1b9bf8774def3fa5689b5b (patch) | |
| tree | 7600a999257e8528f01305c84a6e8f80053086e7 /drivers/nfc | |
| parent | media: sh_vou: Convert to devm_platform_ioremap_resource() (diff) | |
| download | linux-5ae544d94abc8ff77b1b9bf8774def3fa5689b5b.tar.xz linux-5ae544d94abc8ff77b1b9bf8774def3fa5689b5b.zip | |
media: dw2102: Fix null-ptr-deref in dw2102_i2c_transfer()
In dw2102_i2c_transfer, 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 dw2102_i2c_transfer. 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 950e252cb469
("[media] dw2102: limit messages to buffer size")
Signed-off-by: Zhang Shurong <zhang_shurong@foxmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Diffstat (limited to 'drivers/nfc')
0 files changed, 0 insertions, 0 deletions