In Wireshark 2.2.0 to 2.2.5 and 2.0.0 to 2.0.11, the SLSK dissector could go into an infinite loop, triggered by packet injection or a malformed capture file. This was addressed in epan/dissectors/packet-slsk.c by adding checks for the remaining length.
https://www.wireshark.org/security/wnpa-sec-2017-19.html
https://lists.debian.org/debian-lts-announce/2019/01/msg00010.html