Local kernel compromise via AMDGPU recovery race
Published Jan 13, 2026 · Updated Jan 13, 2026
Use-after-free in Linux Kernel 6.17 through 6.18.2 allows local users to execute code in the kernel via AMDGPU job submission. In amdgpu_device_gpu_recover, drm_sched_start restarts the timeout queue before the timeout callback finishes, allowing that queue to free the job before its PASID is read. Access to an AMDGPU render or primary device node is required; successful exploitation can disclose or alter kernel memory or crash the host.
Summary
What happened
Use-after-free in Linux Kernel 6.17 through 6.18.2 allows local users to execute code in the kernel via AMDGPU job submission. In amdgpu_device_gpu_recover, drm_sched_start restarts the timeout queue before the timeout callback finishes, allowing that queue to free the job before its PASID is read. Access to an AMDGPU render or primary device node is required; successful exploitation can disclose or alter kernel memory or crash the host.
The record
- CVE
- CVE-2025-68793
- Published
- Jan 13, 2026
- Updated
- Jan 13, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux Kernel
- Classifications
- T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 13, 2026CVE publishedPublication date reported by the CVE source.
- Jan 13, 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=6.17
- Affected versionversion=a72002cb181f350734108228b24c5d10d358f95a <77f73253015cbc7893fca1821ac3eae9eb4bc943
- Affected versionversion=a72002cb181f350734108228b24c5d10d358f95a <dac58c012c47cadf337a35eb05d44498c43e5cd0
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
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Technologies
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Your stack
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