CVE-2024-49901 Information

Description

In the Linux kernel the following vulnerability has been resolved:

drm/msm/adreno: Assign msm_gpu->pdev earlier to avoid nullptrs

There are some cases such as the one uncovered by Commit 46d4efcccc68 (\drm/msm/a6xx: Avoid a nullptr dereference when speedbin setting fails) where

msm_gpu_cleanup() : platform_set_drvdata(gpu->pdev NULL);

is called on gpu->pdev == NULL as the GPU device has not been fully initialized yet.

Turns out that there’s more than just the aforementioned path that causes this to happen (e.g. the case when there’s speedbin data in the catalog but opp-supported-hw is missing in DT).

Assigning msm_gpu->pdev earlier seems like the least painful solution to this therefore do so.

Patchwork: https://patchwork.freedesktop.org/patch/602742/

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

https://git.kernel.org/stable/c/9288a9676c529ad9c856096db68fad812499bc4a https://git.kernel.org/stable/c/9773737375b20070ea935203fd66cb9fa17c5acb https://git.kernel.org/stable/c/e8ac2060597a5768e4699bb61d604b4c09927b85 https://git.kernel.org/stable/c/16007768551d5bfe53426645401435ca8d2ef54f

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5