Bug 2320476 (CVE-2024-50004)

Summary:	CVE-2024-50004 kernel: drm/amd/display: update DML2 policy EnhancedPrefetchScheduleAccelerationFinal DCN35
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:	dfreiber, drow, jburrell, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2320934
Bug Blocks:

Description OSIDB Bzimport 2024-10-21 19:04:33 UTC

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

drm/amd/display: update DML2 policy EnhancedPrefetchScheduleAccelerationFinal DCN35

[WHY & HOW]
Mismatch in DCN35 DML2 cause bw validation failed to acquire unexpected DPP pipe to cause
grey screen and system hang. Remove EnhancedPrefetchScheduleAccelerationFinal value override
to match HW spec.

(cherry picked from commit 9dad21f910fcea2bdcff4af46159101d7f9cd8ba)

Comment 1 Michal Findra 2024-10-22 11:45:35 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102108-CVE-2024-50004-101e@gregkh/T