CVE-2024-35984 i2c: smbus: fix NULL function pointer dereference

2024-05-2009:47:51

Linux

github.com

linux kernel

vulnerability resolved

oops

designware controller

target-only modes

assumption

transfer function

theoretical regressions

6.8 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

5.1%

JSON

In the Linux kernel, the following vulnerability has been resolved:

i2c: smbus: fix NULL function pointer dereference

Baruch reported an OOPS when using the designware controller as target
only. Target-only modes break the assumption of one transfer function
always being available. Fix this by always checking the pointer in
__i2c_transfer.

[wsa: dropped the simplification in core-smbus to avoid theoretical regressions]

CNA Affected

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