The dissect_bthci_eir_ad_data function in epan/dissectors/packet-bthci_cmd.c in the Bluetooth HCI dissector in Wireshark 1.6.x before 1.6.13 and 1.8.x before 1.8.5 uses an incorrect data type for a counter variable, which allows remote attackers to cause a denial of service (infinite loop) via a malformed packet.
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.