Description

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

drm/amd/display: Add NULL check for function pointer in dcn32_set_output_transfer_func

This commit adds a null check for the set_output_gamma function pointer
in the dcn32_set_output_transfer_func function. Previously,
set_output_gamma was being checked for null, but then it was being
dereferenced without any null check. This could lead to a null pointer
dereference if set_output_gamma is null.

To fix this, we now ensure that set_output_gamma is not null before
dereferencing it. We do this by adding a null check for set_output_gamma
before the call to set_output_gamma.

Classification

CVE ID: CVE-2024-49909

CVSS Base Severity: LOW

CVSS Base Score: 0.0

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 5.06% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://git.kernel.org/stable/c/f38b09ba6a335c511eb27920bb9bb4a1b2c20084
https://git.kernel.org/stable/c/496486950c3d2aebf46a3be300296ac091da7a2d
https://git.kernel.org/stable/c/5298270bdabe97be5b8236e544c9e936415fe1f2
https://git.kernel.org/stable/c/28574b08c70e56d34d6f6379326a860b96749051

Timeline