# CVE-2026-31462: drm/amdgpu: prevent immediate PASID reuse case

Status: published. Published: 2026-04-22. Updated: 2026-11-05.

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: prevent immediate PASID reuse case

PASID resue could cause interrupt issue when process
immediately runs into hw state left by previous
process exited with the same PASID, it's possible that
page faults are still pending in the IH ring buffer when
the process exits and frees up its PASID. To prevent the
case, it uses idr cyclic allocator same as kernel pid's.

(cherry picked from commit 8f1de51f49be692de137c8525106e0fce2d1912d)

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ 02208441cc3a5110191996bb129db39ff10e7395; < 185a5e779c259869b8d5c20bd90e7a780c56576b (affected, git); ≥ 02208441cc3a5110191996bb129db39ff10e7395; < f69491478e3de0e3c6aac2ee89b3cda3f2471301 (affected, git); ≥ 02208441cc3a5110191996bb129db39ff10e7395; < c0b3882836de8ac991b626823966f385555bbcff (affected, git); ≥ 02208441cc3a5110191996bb129db39ff10e7395; < 51ccaf0e30c303149244c34820def83d74c86288 (affected, git); ≥ 02208441cc3a5110191996bb129db39ff10e7395; < 9e5ebfe99b223bb0eb9c50a125c9c02f4ef4c71b (affected, git); ≥ 02208441cc3a5110191996bb129db39ff10e7395; < 14b81abe7bdc25f8097906fc2f91276ffedb2d26 (affected, git). Source: CNA: Linux
- Linux / Linux: 4.15 (affected); ≥ 0; < 4.15 (unaffected, semver); ≥ 6.1.191; ≤ 6.1.* (unaffected, semver); ≥ 6.6.160; ≤ 6.6.* (unaffected, semver); ≥ 6.12.80; ≤ 6.12.* (unaffected, semver); ≥ 6.18.21; ≤ 6.18.* (unaffected, semver); ≥ 6.19.11; ≤ 6.19.* (unaffected, semver); ≥ 7.0; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.16% as of 2026-11-05; percentile 4.73%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: Not reported

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://git.kernel.org/stable/c/185a5e779c259869b8d5c20bd90e7a780c56576b (CNA: Linux)

- https://git.kernel.org/stable/c/f69491478e3de0e3c6aac2ee89b3cda3f2471301 (CNA: Linux)

- https://git.kernel.org/stable/c/c0b3882836de8ac991b626823966f385555bbcff (CNA: Linux)

- https://git.kernel.org/stable/c/51ccaf0e30c303149244c34820def83d74c86288 (CNA: Linux)

- https://git.kernel.org/stable/c/9e5ebfe99b223bb0eb9c50a125c9c02f4ef4c71b (CNA: Linux)

- https://git.kernel.org/stable/c/14b81abe7bdc25f8097906fc2f91276ffedb2d26 (CNA: Linux)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2026-31462; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-31462; retrieved 2026-11-05; source updated Not reported

Revision: 4f013ee4994a73439f929b3a7939cf1ab5599adc67ede885413d631d6b7e75e1

Canonical: https://y2.dev/cve/CVE-2026-31462

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