Linux Kernel wl1251 EUVD-2026-27635

Update to patched Linux kernel versions: 6.6.136 or later for 6.6.x LTS, 6.12.83+ for 6.12.x, 6.18.24+ for 6.18.x, 6.19.14+ for 6.19.x stable branches, or mainline 7.0+. Patches available from kernel.org stable tree (see git.kernel.org/stable/c/b6ba1eacf276063ebeefbbae8056043c24f2efaf and related commits). If immediate patching is not feasible, compensating controls include: disable wl1251 kernel module via modprobe blacklist (add 'blacklist wl1251' to /etc/modprobe.d/blacklist.conf) which prevents driver loading-acceptable if wl1251 is not required for operations but breaks WiFi functionality for affected hardware; restrict wireless network adjacency by isolating systems with wl1251 hardware to dedicated trusted VLANs with strict access controls-reduces attacker adjacency but adds network segmentation complexity; or physically disable/remove wl1251 wireless hardware if not operationally required. Module blacklisting is the most practical short-term mitigation but renders wireless unusable on affected systems. Kernel updates remain the definitive solution with no functional trade-offs.