print-wb.c in tcpdump before 4.7.4 allows remote attackers to cause a denial of service (segmentation fault and process crash).
https://github.com/the-tcpdump-group/tcpdump/issues/446
https://github.com/the-tcpdump-group/tcpdump/commit/3ed82f4ed0095768529afc22b923c8f7171fff70
https://bugzilla.redhat.com/show_bug.cgi?id=1212342
http://lists.opensuse.org/opensuse-updates/2017-05/msg00018.html