Bug 2535121 (CVE-2026-89827) - CVE-2026-89827 kernel: drm/amdgpu: avoid force-completing uninitialized UVD rings
Summary: CVE-2026-89827 kernel: drm/amdgpu: avoid force-completing uninitialized UVD r...
Keywords:
Status: NEW
Alias: CVE-2026-89827
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-16 10:51 UTC by OSIDB Bzimport
Modified: 2026-11-03 05:07 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-16 10:51:55 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: avoid force-completing uninitialized UVD rings

uvd_v7_0_sw_init() does not initialize the UVD decode ring for an
SR-IOV VF. However, amdgpu_uvd_resume() unconditionally force-completes
the decode ring when restoring its fence sequence.

Skip fence completion when the fence driver is not initialized.
Comment 1 Mauro Matteo Cascella 2026-09-21 17:40:46 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89827.mbox
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