CVE-2026-45853
drm/amdgpu: Use kvfree instead of kfree in amdgpu_gmc_get_nps_memranges()
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Use kvfree instead of kfree in amdgpu_gmc_get_nps_memranges() amdgpu_discovery_get_nps_info() internally allocates memory for ranges using kvcalloc(), which may use vmalloc() for large allocation. Using kfree() to release vmalloc memory will lead to a memory corruption. Use kvfree() to safely handle both kmalloc and vmalloc allocations. Compile tested only. Issue found using a prototype static analysis tool and code review.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Linux Linux |
≥ b194d21b9bcc15b50df1bc3ff7428e51c2918a6f; < 16e7e7ad8cdc6b4c4af7f31e262f1494c1b2a55e (affected, git) ≥ b194d21b9bcc15b50df1bc3ff7428e51c2918a6f; < 9ae85b0c1909b6c6bfd2636b04cdaf7f520bf2b5 (affected, git) ≥ b194d21b9bcc15b50df1bc3ff7428e51c2918a6f; < f441538893eba6347b983f2904819ca6c99da65e (affected, git) ≥ b194d21b9bcc15b50df1bc3ff7428e51c2918a6f; < 0c44d61945c4a80775292d96460aa2f22e62f86c (affected, git) Other versions: unaffected |
CNA: Linux |
| Linux Linux |
6.11 (affected) ≥ 0; < 6.11 (unaffected, semver) ≥ 6.12.75; ≤ 6.12.* (unaffected, semver) ≥ 6.18.14; ≤ 6.18.* (unaffected, semver) ≥ 6.19.4; ≤ 6.19.* (unaffected, semver) ≥ 7.0; ≤ * (unaffected, original_commit_for_fix) Other versions: affected |
CNA: Linux |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://git.kernel.org/stable/c/16e7e7ad8cdc6b4c4af7f31e262f1494c1b2a55eCNA: Linux
- https://git.kernel.org/stable/c/9ae85b0c1909b6c6bfd2636b04cdaf7f520bf2b5CNA: Linux
- https://git.kernel.org/stable/c/f441538893eba6347b983f2904819ca6c99da65eCNA: Linux
- https://git.kernel.org/stable/c/0c44d61945c4a80775292d96460aa2f22e62f86cCNA: Linux
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