#VU124903 NULL pointer dereference in Linux kernel - CVE-2026-23467
Published: April 6, 2026
Vulnerability identifier: #VU124903
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-23467
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in the intel_dmc_update_dc6_allowed_count() function when initializing display power management during device probe. A local user can trigger the vulnerable code path to cause a denial of service.
The issue occurs when DMC has not been initialized and the dmc pointer is NULL. It is triggered only under specific DC state conditions during probe, making the failure mode unlikely.
Remediation
Install security update from vendor's repository.