drm/amdkfd: Fix a race condition of vram buffer unref in svm code
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix a race condition of vram buffer unref in svm code prange->svm_bo unref can happen in both mmu callback and a callback after migrate to system ram. Both are async call in different tasks. Sync svm_bo unref operation to avoid random "use-after-free".
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://git.kernel.org/stable/c/7d43cdd22cd81a2b079e864c4321b9aba4c6af34
- https://git.kernel.org/stable/c/50f35a907c4f9ed431fd3dbb8b871ef1cbb0718e
- https://git.kernel.org/stable/c/c772eacbd6d0845fc922af8716bb9d29ae27b8cf
- https://git.kernel.org/stable/c/fc0210720127cc6302e6d6f3de48f49c3fcf5659
- https://git.kernel.org/stable/c/709c348261618da7ed89d6c303e2ceb9e453ba74
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Weaknesses (CWE)
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MITRE ATT&CK TTPs
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