Memory leak in Linux kernel - CVE-2026-89872

 

Memory leak in Linux kernel - CVE-2026-89872

Published: September 17, 2026


Vulnerability identifier: #VU150412
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89872
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to leak fwnode references.

The vulnerability exists due to a missing reference release in v4l2_fwnode_parse_link when parsing a link. A local user can trigger link parsing to leak fwnode references.


Affected software

Linux kernel

How to mitigate CVE-2026-89872

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3

External References

Related Security Bulletins