What’s Vulnerable › Vulnerabilities

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

• 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: 2026-04-22 · updated 2026-10-30

Description

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)

Affected products

• Linux kernel: from 4.15 before 6.12.80; from 6.13 before 6.18.21; from 6.19 before 6.19.11; 7.0-rc1, 7.0-rc2, 7.0-rc3, 7.0-rc4, 7.0-rc5 — fixed in 6.12.80, 6.18.21, 6.19.11
• Linux: 4.15 — fixed in 7.0

How to fix

Upgrade to a fixed version: Linux kernel 6.12.80, 6.18.21, 6.19.11; Linux 7.0. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/14b81abe7bdc25f8097906fc2f91276ffedb2d26
• https://git.kernel.org/stable/c/185a5e779c259869b8d5c20bd90e7a780c56576b
• https://git.kernel.org/stable/c/51ccaf0e30c303149244c34820def83d74c86288
• https://git.kernel.org/stable/c/9e5ebfe99b223bb0eb9c50a125c9c02f4ef4c71b
• https://git.kernel.org/stable/c/c0b3882836de8ac991b626823966f385555bbcff
• https://git.kernel.org/stable/c/f69491478e3de0e3c6aac2ee89b3cda3f2471301

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