tcpdump before 4.9.3 has a heap-based buffer over-read related to aoe_print in print-aoe.c and lookup_emem in addrtoname.c.
https://usn.ubuntu.com/4252-2/
https://usn.ubuntu.com/4252-1/
https://support.apple.com/kb/HT210788
https://seclists.org/bugtraq/2019/Oct/2
https://seclists.org/bugtraq/2019/Dec/23
https://github.com/the-tcpdump-group/tcpdump/issues/645
https://github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9/CHANGES
http://www.securitytracker.com/id/1039773
http://seclists.org/fulldisclosure/2019/Dec/26
http://packetstormsecurity.com/files/154710/Slackware-Security-Advisory-tcpdump-Updates.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00053.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00050.html
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00065.html