AZL-83690
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-83690.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-83690
- Upstream
- Published
- 2026-04-24T15:16:31Z
- Modified
- 2026-08-28T17:45:11.180361982Z
- Summary
- CVE-2026-31566 affecting package kernel for versions less than 6.6.134.1-2
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: Fix fence put before wait in amdgpuamdkfdsubmit_ib
amdgpuamdkfdsubmitib() submits a GPU job and gets a fence from amdgpuib_schedule(). This fence is used to wait for job completion.
Currently, the code drops the fence reference using dmafenceput() before calling dmafencewait().
If dmafenceput() releases the last reference, the fence may be freed before dmafencewait() is called. This can lead to a use-after-free.
Fix this by waiting on the fence first and releasing the reference only after dmafencewait() completes.
Fixes the below: drivers/gpu/drm/amd/amdgpu/amdgpuamdkfd.c:697 amdgpuamdkfdsubmitib() warn: passing freed memory 'f' (line 696)
(cherry picked from commit 8b9e5259adc385b61a6590a13b82ae0ac2bd3482)
- References