CVE-2021-47447: drm/msm/a3xx: fix error handling in a3xx_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

Description

In the Linux kernel, the following vulnerability has been resolved: drm/msm/a3xx: fix error handling in a3xx_gpu_init() These error paths returned 1 on failure, instead of a negative error code. This would lead to an Oops in the caller. A second problem is that the check for "if (ret != -ENODATA)" did not work because "ret" was 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/3eda901995371d390ef82d0b6462f4ea8efbcfdf
https://git.kernel.org/stable/c/d59e44e7821a8f2bb6f2e846b9167397a5f01608
https://git.kernel.org/stable/c/3eda901995371d390ef82d0b6462f4ea8efbcfdf
https://git.kernel.org/stable/c/d59e44e7821a8f2bb6f2e846b9167397a5f01608

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