High · CVSS 7.8CVE-2026-31566

drm/amdgpu: Fix fence put before wait in amdgpu_amdkfd_submit_ibCVE-2026-31566

Answer in brief

CVE-2026-31566 records a High severity (CVSS 7.8) vulnerability in drm/amdgpu: Fix fence put before wait in amdgpu_amdkfd_submit_ib. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Apr 24, 2026Updated Oct 16, 2026Source checked Oct 16, 2026First seen by HOL Oct 16, 2026Material review Oct 16, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=9ae55f030dc523fc4dc6069557e4a887ea815453 <bc7760c107dc08ef3e231d72c492e67b0a86848b \|\| >=9ae55f030dc523fc4dc6069557e4a887ea815453 <e23602eb0779760544314ed3905fa6a89a4e4070 \|\| >=9ae55f030dc523fc4dc6069557e4a887ea815453 <138e42be35ff2ce6572ae744de851ea286cf3c69 \|\| >=9ae55f030dc523fc4dc6069557e4a887ea815453 <39820864eacd886f1a6f817414fb8f9ea3e9a2b4 \|\| >=9ae55f030dc523fc4dc6069557e4a887ea815453 <42d248726a0837640452b71c5a202ca3d35239ec \|\| >=9ae55f030dc523fc4dc6069557e4a887ea815453 <7150850146ebfa4ca998f653f264b8df6f7f85be	bc7760c107dc08ef3e231d72c492e67b0a86848b, e23602eb0779760544314ed3905fa6a89a4e4070, 138e42be35ff2ce6572ae744de851ea286cf3c69, 39820864eacd886f1a6f817414fb8f9ea3e9a2b4, 42d248726a0837640452b71c5a202ca3d35239ec, 7150850146ebfa4ca998f653f264b8df6f7f85be
Linux/Linuxgeneric	6.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to bc7760c107dc08ef3e231d72c492e67b0a86848b if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Apr 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 16, 2026

Sources and claim methodology

Upstream source 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)

Quoted source text, attributed separately from HOL analysis.