The dissect_pft_fec_detailed function in epan/dissectors/packet-dcp-etsi.c in the DCP-ETSI dissector in Wireshark 1.6.x before 1.6.13 and 1.8.x before 1.8.5 does not properly handle fragment gaps, which allows remote attackers to cause a denial of service (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.