Linux Kernel CVE-2026-43255

Update to patched kernel versions: 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.16, 6.19.6, or 7.0 and later. Apply the upstream fix commits available at https://git.kernel.org/stable/c/498525d8358d6d20918787e59736d5b6a021e9fd (and corresponding commits for other branches). For systems unable to immediately patch, disable libertas USB wireless driver modules if the hardware is not in use by unloading the module with 'modprobe -r libertas_usbhelper libertas_usb' or equivalent, though this will disable wireless connectivity on affected hardware. Restrict local system access to trusted users only to reduce the attack surface, as exploitation requires user-level privileges and the ability to trigger rapid firmware reloading or repeated usb_tx_block() calls. Avoid rapid firmware reloading or repeated wireless device initialization sequences while using vulnerable kernel versions.