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
- https://git.kernel.org/stable/c/3ced388b7908270529e5aa6d221840114b6c33bc
- https://git.kernel.org/stable/c/578c4bfa28bf21458ecdde2fd3fc429475f34c10
- https://git.kernel.org/stable/c/881aafb139520570fd3390bf9938d7098b7fbb99
- https://git.kernel.org/stable/c/a6e86efd7f85e519bf48417f41923f8bd51f1597
- https://git.kernel.org/stable/c/c9b5238d173ee9b94dcaa2b34244ea89c8024feb
- https://git.kernel.org/stable/c/ccd8d1d80afab8b492a583ae81bfd295835bab2f
- https://git.kernel.org/stable/c/d92dc4692834e04bc0ef1d0908589852050d1a66
- https://git.kernel.org/stable/c/ef609b3ce456f021320fee2fb7e45094a3ccf232