Use-after-free in Linux kernel - CVE-2026-97609
Published: September 28, 2026
Vulnerability identifier: #VU152604
CSH Severity: Low
CVSS v4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97609
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose sensitive information, modify data, or cause a denial of service.
The vulnerability exists due to a use-after-free in the nfnetlink_cttimeout timeout hook handling when a timeout policy lookup races with module unload. A local user can trigger a timeout policy lookup during module unload to disclose sensitive information, modify data, or cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-97609
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3