Description: BLURtooth: "Dual mode" hardware using CTKD are vulnerable to key overwrite
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=1878021
 https://securityaffairs.co/wordpress/108096/hacking/blurtooth-bluetooth-attack.html
 https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/blurtooth/
 https://www.kb.cert.org/vuls/id/589825/
 https://bugzilla.suse.com/show_bug.cgi?id=1176442
Notes:
 bwh> Introduced in 3.19 as noted in
 bwh> http://www.bluez.org/bluetooth-4-2-features-going-to-the-3-19-kernel-release/
Bugs:
upstream: needed
5.10-upstream-stable: needed
4.19-upstream-stable: needed
4.9-upstream-stable: needed
sid: needed
5.10-bullseye-security: needed
4.19-buster-security: needed
4.9-stretch-security: needed