lmp_print_data_link_subobjs() in print-lmp.c in tcpdump before 4.9.3 lacks certain bounds checks.
https://www.debian.org/security/2019/dsa-4547
https://usn.ubuntu.com/4252-2/
https://usn.ubuntu.com/4252-1/
https://support.apple.com/kb/HT210788
https://security.netapp.com/advisory/ntap-20200120-0001/
https://seclists.org/bugtraq/2019/Oct/28
https://seclists.org/bugtraq/2019/Dec/23
https://lists.debian.org/debian-lts-announce/2019/10/msg00015.html
https://github.com/the-tcpdump-group/tcpdump/commit/0b661e0aa61850234b64394585cf577aac570bf4
https://github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9/CHANGES
http://seclists.org/fulldisclosure/2019/Dec/26
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00053.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00050.html