In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-wccp.c had a large loop that was addressed by ensuring that a calculated length was monotonically increasing.
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14412
https://lists.debian.org/debian-lts-announce/2018/04/msg00018.html
https://lists.debian.org/debian-lts-announce/2019/01/msg00010.html