Bug 2320553 (CVE-2024-49992)

Summary: CVE-2024-49992 kernel: drm/stm: Avoid use-after-free issues with crtc and plane
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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OS: Linux   
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Description OSIDB Bzimport 2024-10-21 19:10:19 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/stm: Avoid use-after-free issues with crtc and plane

ltdc_load() calls functions drm_crtc_init_with_planes(),
drm_universal_plane_init() and drm_encoder_init(). These functions
should not be called with parameters allocated with devm_kzalloc()
to avoid use-after-free issues [1].

Use allocations managed by the DRM framework.

Found by Linux Verification Center (linuxtesting.org).

[1]
https://lore.kernel.org/lkml/u366i76e3qhh3ra5oxrtngjtm2u5lterkekcz6y2jkndhuxzli@diujon4h7qwb/
Comment 1 Robb Gatica 2024-10-22 16:33:55 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102137-CVE-2024-49992-fd66@gregkh/T