CVE-2022-48982

A flaw was found in the Linux kernel. A local attacker, by repeatedly replugging a specific type of fake Bluetooth controller (CSR 5.0 clones), can cause the system to crash. This denial of service (DoS) vulnerability occurs because the suspend notifier is registered twice, leading to a kernel panic.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

To mitigate this issue, prevent the btusb and bluetooth kernel modules from loading. This can be achieved by creating a modprobe configuration file.

1. Create a file named /etc/modprobe.d/disable-bluetooth.conf with the following content:

blacklist btusb
blacklist bluetooth

2. Reboot the system for the changes to take effect, or unload the modules if they are currently loaded:

sudo modprobe -r btusb bluetooth

This action will disable all Bluetooth functionality on the system.