It may be possible to make Wireshark crash by injecting a malformed packet onto the wire or by convincing someone to read a malformed packet trace file.
Created wireshark tracking bugs for this issue:
Affects: fedora-all [bug 1625927]
Created attachment 1487124 [details]
RHEL6/7 not reproducible. Patch doesn't look applicable either -- guessing these changes were made later.