Bug 2405749 (CVE-2023-53714)

Summary: CVE-2023-53714 kernel: drm/stm: ltdc: fix late dereference check
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2025-10-22 14:04:20 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/stm: ltdc: fix late dereference check

In ltdc_crtc_set_crc_source(), struct drm_crtc was dereferenced in a
container_of() before the pointer check. This could cause a kernel panic.

Fix this smatch warning:
drivers/gpu/drm/stm/ltdc.c:1124 ltdc_crtc_set_crc_source() warn: variable dereferenced before check 'crtc' (see line 1119)
Comment 1 Jon Moroney 2025-10-22 17:11:54 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025102213-CVE-2023-53714-6b41@gregkh/T