Security Advisory

Linux Kernel Security Update Advisory (CVE-2026-43499)

An update advisory regarding a security vulnerability in the Linux kernel has been issued.
The vulnerability is CVE-2026-43499, a “use-after-free” vulnerability in the Linux kernel’s RT Mutex (rtmutex).
Affected Linux kernel versions include 2.6.39 Through 6.6.139, 6.12 Through 6.12.85, 6.18 Through 6.18.26, 7.0 Through 7.0.3, And versions prior to 7.1-Rc1.
Fixed versions include 6.6.140 Or higher, 6.12.86 Or higher, 6.18.27 Or higher, 7.0.4 Or higher, and 7.1 Or higher.
Users of these products should update to the latest version with the Vulnerability Patch following the instructions on the reference website.