CVE-2021-47446: drm/msm/a4xx: fix error handling in a4xx_gpu_init()

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: 2024-05-22 · updated 2026-08-04
Weakness: CWE-908

Description

In the Linux kernel, the following vulnerability has been resolved: drm/msm/a4xx: fix error handling in a4xx_gpu_init() This code returns 1 on error instead of a negative error. It leads to an Oops in the caller. A second problem is that the check for "if (ret != -ENODATA)" cannot be true because "ret" is set to 1.

Affected products

Linux kernel: from 5.11 before 5.14.14; 5.15-rc1, 5.15-rc2, 5.15-rc3, 5.15-rc4, 5.15-rc5 — fixed in 5.14.14

How to fix

Upgrade to a fixed version: Linux kernel 5.14.14. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/3962d626eb3e3b23ebb2e2a61537fa764acbfe11
https://git.kernel.org/stable/c/980d74e7d03ccf2eaa11d133416946bd880c7c08
https://git.kernel.org/stable/c/3962d626eb3e3b23ebb2e2a61537fa764acbfe11
https://git.kernel.org/stable/c/980d74e7d03ccf2eaa11d133416946bd880c7c08

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