CVE-2023-53714 drm/stm: ltdc: fix late dereference check

Not scored Published 22 Oct 2025 Updated 11 May 2026

A null pointer dereference in the Linux kernel's STM LTDC driver allows local attackers to cause a system crash.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2023-53714?

CVE-2023-53714 is a vulnerability in Linux, published on 22 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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)

Which versions are affected by CVE-2023-53714?

How do I fix CVE-2023-53714?

Apply the vendor's patch.

Is CVE-2023-53714 being exploited?

There is no known exploitation of CVE-2023-53714 in the wild and no public exploit code.

Sources

Also known as BELL-CVE-2023-53714, DEBIAN-CVE-2023-53714, GHSA-fjvm-jv5g-pc7r, ROOT-OS-DEBIAN-11-CVE-2023-53714, ROOT-OS-UBUNTU-2204-CVE-2023-53714, UBUNTU-CVE-2023-53714.