CVE-2024-49901: drm/msm/adreno: Assign msm_gpu->pdev earlier to avoid nullptrs

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-10-21 · updated 2026-10-30
Weakness: CWE-476

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/

Affected products

Linux kernel: before 6.6.55; from 6.7 before 6.10.14; from 6.11 before 6.11.3 — fixed in 6.6.55, 6.10.14, 6.11.3
Linux: 3.12 — fixed in 6.12

How to fix

Upgrade to a fixed version: Linux kernel 6.6.55, 6.10.14, 6.11.3; Linux 6.12. Check the vendor advisory for mitigations.

References

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