Service disruption via immediate PASID reuse
Published Apr 22, 2026 · Updated Apr 22, 2026
Race condition in the AMDGPU driver in Linux Kernel allows local users to disrupt system availability through immediate PASID reuse. The PASID allocator can return an identifier freed by an exiting process while that process still has page faults pending in the interrupt-handler ring, causing a new process to enter stale hardware state. Exploitation requires local low-privileged access and an AMD GPU using the driver; the resulting interrupt fault disrupts availability without a reported confidentiality or integrity impact.
Summary
What happened
Race condition in the AMDGPU driver in Linux Kernel allows local users to disrupt system availability through immediate PASID reuse. The PASID allocator can return an identifier freed by an exiting process while that process still has page faults pending in the interrupt-handler ring, causing a new process to enter stale hardware state. Exploitation requires local low-privileged access and an AMD GPU using the driver; the resulting interrupt fault disrupts availability without a reported confidentiality or integrity impact.
The record
- CVE
- CVE-2026-31462
- Published
- Apr 22, 2026
- Updated
- Apr 22, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux Kernel
- Classifications
- T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 22, 2026CVE publishedPublication date reported by the CVE source.
- Apr 22, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <14b81abe7bdc25f8097906fc2f91276ffedb2d26
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <51ccaf0e30c303149244c34820def83d74c86288
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9e5ebfe99b223bb0eb9c50a125c9c02f4ef4c71b
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c0b3882836de8ac991b626823966f385555bbcff
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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