Bug 2320448 (CVE-2024-49896)

Summary: CVE-2024-49896 kernel: drm/amd/display: Check stream before comparing them
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: 2320779    
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Description OSIDB Bzimport 2024-10-21 19:02:41 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Check stream before comparing them

[WHAT & HOW]
amdgpu_dm can pass a null stream to dc_is_stream_unchanged. It is
necessary to check for null before dereferencing them.

This fixes 1 FORWARD_NULL issue reported by Coverity.
Comment 1 Robb Gatica 2024-10-21 22:03:27 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102119-CVE-2024-49896-f220@gregkh/T