In Wireshark 3.0.0, the Rbm dissector could go into an infinite loop. This was addressed in epan/dissectors/file-rbm.c by handling unknown object types safely.
https://www.wireshark.org/security/wnpa-sec-2019-13.html
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15612
http://www.securityfocus.com/bid/107836
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00027.html