Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix fence put before wait in amdgpu_amdkfd_submit_ib amdgpu_amdkfd_submit_ib() submits a GPU job and gets a fence from amdgpu_ib_schedule(). This fence is used to wait for job completion. Currently, the code drops the fence reference using dma_fence_put() before calling dma_fence_wait(). If dma_fence_put() releases the last reference, the fence may be freed before dma_fence_wait() is called. This can lead to a use-after-free. Fix this by waiting on the fence first and releasing the reference only after dma_fence_wait() completes. Fixes the below: drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c:697 amdgpu_amdkfd_submit_ib() warn: passing freed memory 'f' (line 696) (cherry picked from commit 8b9e5259adc385b61a6590a13b82ae0ac2bd3482)
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.0.1, < 6.1.168 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/138e42be35ff2ce6572ae744de851ea286cf3c69Patch
- https://git.kernel.org/stable/c/39820864eacd886f1a6f817414fb8f9ea3e9a2b4Patch
- https://git.kernel.org/stable/c/42d248726a0837640452b71c5a202ca3d35239ecPatch
- https://git.kernel.org/stable/c/7150850146ebfa4ca998f653f264b8df6f7f85bePatch
- https://git.kernel.org/stable/c/bc7760c107dc08ef3e231d72c492e67b0a86848bPatch
- https://git.kernel.org/stable/c/e23602eb0779760544314ed3905fa6a89a4e4070Patch
FAQ
What is CVE-2026-31566?
CVE-2026-31566 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix fence put before wait in amdgpu_amdkfd_submit_ib amdgpu_amdkfd_submit_ib() submits a GPU job and gets a fence from...
How severe is CVE-2026-31566?
CVE-2026-31566 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-31566?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.