Bug 2330342 (CVE-2024-53133)

Summary: CVE-2024-53133 kernel: drm/amd/display: Handle dml allocation failure to avoid crash
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: high    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Bug Depends On: 2330502    
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Description OSIDB Bzimport 2024-12-04 15:01:38 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Handle dml allocation failure to avoid crash

[Why]
In the case where a dml allocation fails for any reason, the
current state's dml contexts would no longer be valid. Then
subsequent calls dc_state_copy_internal would shallow copy
invalid memory and if the new state was released, a double
free would occur.

[How]
Reset dml pointers in new_state to NULL and avoid invalid
pointer

(cherry picked from commit bcafdc61529a48f6f06355d78eb41b3aeda5296c)
Comment 1 Avinash Hanwate 2024-12-05 04:38:37 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024120451-CVE-2024-53133-b0b7@gregkh/T