Bug 2320446 (CVE-2024-49923)

Summary:	CVE-2024-49923 kernel: drm/amd/display: Pass non-null to dcn20_validate_apply_pipe_split_flags
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:	2320742
Bug Blocks:

Description OSIDB Bzimport 2024-10-21 19:02:33 UTC

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

drm/amd/display: Pass non-null to dcn20_validate_apply_pipe_split_flags

[WHAT & HOW]
"dcn20_validate_apply_pipe_split_flags" dereferences merge, and thus it
cannot be a null pointer. Let's pass a valid pointer to avoid null
dereference.

This fixes 2 FORWARD_NULL issues reported by Coverity.

Comment 1 Robb Gatica 2024-10-21 21:34:32 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102124-CVE-2024-49923-3462@gregkh/T