In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Disable SCO support if READ_VOICE_SETTING is unsupported/broken A SCO connection without the proper voice_setting can cause the controller to lock up.
https://git.kernel.org/stable/c/f48ee562c095e552a30b8d9cc0566a267b410f8a
https://git.kernel.org/stable/c/ec1f015ec0c6fd250a6564e8452f7bb3160b9cb1
https://git.kernel.org/stable/c/14d17c78a4b1660c443bae9d38c814edea506f62