In Wireshark 2.6.0 to 2.6.2, 2.4.0 to 2.4.8, and 2.2.0 to 2.2.16, the Bluetooth Attribute Protocol dissector could crash. This was addressed in epan/dissectors/packet-btatt.c by verifying that a dissector for a specific UUID exists.
{ "urgency": "low" }