NULL pointer dereference in Linux kernel - CVE-2026-31459

 

NULL pointer dereference in Linux kernel - CVE-2026-31459

Published: April 24, 2026


Vulnerability identifier: #VU127688
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-31459
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel

Detailed vulnerability description

The vulnerability allows a local privileged user to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in DAMON_SYSFS when handling wrong sequences of control operations. A local privileged user can perform invalid control sequences to cause a denial of service.


How to mitigate CVE-2026-31459

Install security update from vendor's repository.

Sources