bluetoothd from bluez incorrectly saves adapters’ Discoverable status when a device is powered down, and restores it when powered up. If a device is powered down while discoverable, it will be discoverable when powered on again. This could lead to inadvertent exposure of the bluetooth stack to physically nearby attackers.
bugzilla.redhat.com/show_bug.cgi?id=1984728
git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=b497b5942a8beb8f89ca1c359c54ad67ec843055
github.com/bluez/bluez/commit/b497b5942a8beb8f89ca1c359c54ad67ec843055
gitlab.gnome.org/GNOME/gnome-bluetooth/-/issues/89
security.netapp.com/advisory/ntap-20220407-0002/