Linux Kernel Bluetooth CVE-2026-43334

Upgrade to patched kernel versions: 5.10.253 or later for 5.10.x series, 5.15.203+ for 5.15.x, 6.1.168+ for 6.1.x, 6.6.134+ for 6.6.x, 6.12.81+ for 6.12.x, 6.18.22+ for 6.18.x, 6.19.12+ for 6.19.x, or 7.0+ for mainline. Patch commits available at https://git.kernel.org/stable/c/425a22c5373d4e1b46492ab869074ebeeade61f3 (5.10), https://git.kernel.org/stable/c/fa14e0e19820b1bbdb42185c9c4efa950bcffef9 (5.15), and corresponding links for other branches. For systems unable to upgrade immediately, implement compensating controls: disable Bluetooth entirely if not operationally required (via 'rfkill block bluetooth' or BIOS settings), restrict Bluetooth pairing to trusted devices only through allowlist policies, or disable discoverability mode to prevent unsolicited pairing attempts. In enterprise environments, enforce Bluetooth policy via MDM/configuration management to prevent user-initiated pairing with unknown devices. Note that disabling Bluetooth impacts legitimate peripheral connectivity (keyboards, headsets, medical sensors). Workarounds do not address the underlying kernel flaw and should be considered temporary until patching is completed. Prioritize patching for systems in physically accessible public spaces or those handling sensitive data via Bluetooth connections.