Bug 2307867 (CVE-2024-43894)

Summary: CVE-2024-43894 kernel: drm/client: fix null pointer dereference in drm_client_modeset_probe
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: low    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Bug Depends On: 2308175    
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Description OSIDB Bzimport 2024-08-26 11:20:56 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/client: fix null pointer dereference in drm_client_modeset_probe

In drm_client_modeset_probe(), the return value of drm_mode_duplicate() is
assigned to modeset->mode, which will lead to a possible NULL pointer
dereference on failure of drm_mode_duplicate(). Add a check to avoid npd.
Comment 1 Mauro Matteo Cascella 2024-08-27 14:54:22 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024082607-CVE-2024-43894-aeee@gregkh/T