Memory leak in Linux kernel - CVE-2026-89886
Published: September 17, 2026
Vulnerability identifier: #VU150394
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89886
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a resource leak.
The vulnerability exists due to missing cleanup of asynchronous notifier connections in isys_notifier_init() when parsing or adding fwnode remote subdevices. A local user can trigger a parsing or addition failure after connections have been added to cause a resource leak.
Affected software
Linux kernel
How to mitigate CVE-2026-89886
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3