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CVE-2026-31566

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 f…

Published Apr 24, 2026CWE-416EPSS 0.13%

Overview

CVE-2026-31566 is a high-severity vulnerability. It was published on April 24, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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)

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/138e42be35ff2ce6572ae744de851ea286cf3c69Refgit.kernel.org/stable/c/39820864eacd886f1a6f817414fb8f9ea3e9a2b4Refgit.kernel.org/stable/c/42d248726a0837640452b71c5a202ca3d35239ecRefgit.kernel.org/stable/c/7150850146ebfa4ca998f653f264b8df6f7f85beRefgit.kernel.org/stable/c/bc7760c107dc08ef3e231d72c492e67b0a86848bRefgit.kernel.org/stable/c/e23602eb0779760544314ed3905fa6a89a4e4070

How CyberStrike helps

Frequently asked questions

What is CVE-2026-31566?

CVE-2026-31566 is a high-severity vulnerability. It was published on April 24, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-31566?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-31566?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-31566?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-31566 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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