Bug 2565718 (CVE-2026-99261)

Summary:	CVE-2026-99261 kernel: drm/amdgpu: correct reservation fence slots for userq per-vm BOs eviction
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
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Doc Text:	A flaw was found in the Linux kernel's AMD GPU driver (amdgpu). When managing memory for user queues, the driver reserves an insufficient number of synchronization fence slots during buffer object eviction. A local user can exploit this vulnerability to trigger a kernel crash, resulting in a Denial of Service (DoS).	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-11-03 11:32:53 UTC

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: correct reservation fence slots for userq per-vm BOs eviction

It fixes both the move overflow and the eviction fence add for
evicting these per-vm BOs.