In Wireshark 2.4.0, 2.2.0 to 2.2.8, and 2.0.0 to 2.0.14, the MSDP dissector could go into an infinite loop. This was addressed in epan/dissectors/packet-msdp.c by adding length validation.
https://www.wireshark.org/security/wnpa-sec-2017-38.html
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13933