CVE-2021-4453: drm/amd/pm: fix a potential gpu_metrics_table memory leak

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-02-26 · updated 2026-06-17
Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/pm: fix a potential gpu_metrics_table memory leak Memory is allocated for gpu_metrics_table in renoir_init_smc_tables(), but not freed in int smu_v12_0_fini_smc_tables(). Free it!

Affected products

Linux kernel: from 5.10 before 5.10.88; from 5.11 before 5.15.11; 5.16-rc1, 5.16-rc2, 5.16-rc3, 5.16-rc4, 5.16-rc5 — fixed in 5.10.88, 5.15.11

How to fix

Upgrade to a fixed version: Linux kernel 5.10.88, 5.15.11. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/222cebd995cdf11fe0d502749560f65e64990e55
https://git.kernel.org/stable/c/257b3bb16634fd936129fe2f57a91594a75b8751
https://git.kernel.org/stable/c/aa464957f7e660abd554f2546a588f6533720e21

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