CVE-2023-52921: drm/amdgpu: fix possible UAF in amdgpu_cs_pass1()

Severity: high (CVSS 7.8 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: 2024-11-19 · updated 2026-06-17
Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix possible UAF in amdgpu_cs_pass1() Since the gang_size check is outside of chunk parsing loop, we need to reset i before we free the chunk data. Suggested by Ye Zhang (@VAR10CK) of Baidu Security.

Affected products

Linux kernel: before 6.1.46; from 6.2 before 6.4.11; 6.5-rc1, 6.5-rc2, 6.5-rc3, 6.5-rc4, 6.5-rc5 — fixed in 6.1.46, 6.4.11

How to fix

Upgrade to a fixed version: Linux kernel 6.1.46, 6.4.11. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/90e065677e0362a777b9db97ea21d43a39211399
https://git.kernel.org/stable/c/e08e9dd09809b16f8f8cee8c466841b33d24ed96

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