CVE-2026-53066 drm/sun4i: backend: fix error pointer dereference
A missing error check in the sun4i DRM backend driver allows dereferencing an error pointer, potentially causing a kernel 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-2026-53066?
CVE-2026-53066 is a medium-severity vulnerability in Linux kernel, published on 24 Jun 2026. 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/sun4i: backend: fix error pointer dereference
The function drm_atomic_get_plane_state() can return an error pointer and is not checked for it. Add error pointer check.
Detected by Smatch: drivers/gpu/drm/sun4i/sun4i_backend.c:496 sun4i_backend_atomic_check() error: 'plane_state' dereferencing possible ERR_PTR()
Weakness: CWE-476
Which versions are affected by CVE-2026-53066?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-53066?
Apply the vendor's patch.
Is CVE-2026-53066 being exploited?
There is no known exploitation of CVE-2026-53066 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-53066, DEBIAN-CVE-2026-53066, GHSA-7qff-cmg5-8pwm, ROOT-OS-DEBIAN-11-CVE-2026-53066, ROOT-OS-DEBIAN-12-CVE-2026-53066, ROOT-OS-UBUNTU-2204-CVE-2026-53066 and 2 more.