CVE-2026-23426 drm/logicvc: Fix device node reference leak in logicvc_drm_config_parse()
A reference leak in the Linux kernel's LogicVC DRM driver can lead to resource exhaustion and potential denial of service.
- 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-2026-23426?
CVE-2026-23426 is a medium-severity vulnerability in Linux kernel, published on 3 Apr 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/logicvc: Fix device node reference leak in logicvc_drm_config_parse()
The logicvc_drm_config_parse() function calls of_get_child_by_name() to find the "layers" node but fails to release the reference, leading to a device node reference leak.
Fix this by using the __free(device_node) cleanup attribute to automatic release the reference when the variable goes out of scope.
Which versions are affected by CVE-2026-23426?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-23426?
Apply the vendor's patch.
Is CVE-2026-23426 being exploited?
There is no known exploitation of CVE-2026-23426 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-23426, DEBIAN-CVE-2026-23426, GHSA-6ww2-mmfj-6f5p, ROOT-OS-DEBIAN-12-CVE-2026-23426, ROOT-OS-DEBIAN-13-CVE-2026-23426, ROOT-OS-UBUNTU-2404-CVE-2026-23426 and 1 more.