Bug 2320437 (CVE-2024-49898)

Summary: CVE-2024-49898 kernel: drm/amd/display: Check null-initialized variables
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Bug Depends On: 2320751    
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Description OSIDB Bzimport 2024-10-21 19:01:56 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Check null-initialized variables

[WHAT & HOW]
drr_timing and subvp_pipe are initialized to null and they are not
always assigned new values. It is necessary to check for null before
dereferencing.

This fixes 2 FORWARD_NULL issues reported by Coverity.
Comment 1 Robb Gatica 2024-10-21 21:45:50 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102119-CVE-2024-49898-adff@gregkh/T