Linux Kernel EUVD-2026-27736

Upgrade to patched Linux kernel versions: 7.0 or later (mainline), 6.19.6 or later (6.19.x stable branch), or 6.18.16 or later (6.18.x stable branch). Patches available at https://git.kernel.org/stable/c/5f93d611b33a05bd03d6843c8efe8cb6a1992620 (mainline), https://git.kernel.org/stable/c/3e8a88b5e8b3506d9c5e031a65ba65ce9a0683a3 (6.19.x), and https://git.kernel.org/stable/c/ebeaa3b24ba568ff8505165f954dba15cc53e4b3 (6.18.x). For systems unable to patch immediately, compensating controls include: disable the rtw89 kernel module if RTL8922DE hardware is not required (modprobe blacklist, may break WiFi functionality); restrict access to adjacent network segments through network segmentation and WiFi isolation features (reduces attacker reach but does not eliminate risk from legitimate adjacent users); implement 802.1X port-based network access control to limit adjacent access to authenticated devices (adds authentication layer but allows exploitation post-authentication). Note that disabling the driver eliminates WiFi functionality on affected hardware; network controls reduce but do not eliminate adjacent attack surface.