CVE-2023-53864 drm/mxsfb: Disable overlay plane in mxsfb_plane_overlay_atomic_disable()
A null pointer dereference in the Linux kernel's mxsfb DRM driver allows local attackers to cause a system crash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-53864?
CVE-2023-53864 is a vulnerability in Linux, published on 9 Dec 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/mxsfb: Disable overlay plane in mxsfb_plane_overlay_atomic_disable()
When disabling overlay plane in mxsfb_plane_overlay_atomic_update(), overlay plane's framebuffer pointer is NULL. So, dereferencing it would cause a kernel Oops(NULL pointer dereferencing). Fix the issue by disabling overlay plane in mxsfb_plane_overlay_atomic_disable() instead.
Which versions are affected by CVE-2023-53864?
How do I fix CVE-2023-53864?
Apply the vendor's patch.
Is CVE-2023-53864 being exploited?
There is no known exploitation of CVE-2023-53864 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-53864, DEBIAN-CVE-2023-53864, GHSA-mm25-cp37-hg3x, UBUNTU-CVE-2023-53864.