tcpdump 3.8.3 and earlier allows remote attackers to cause a denial of service (infinite loop) via a crafted (1) BGP packet, which is not properly handled by RT_ROUTING_INFO, or (2) LDP packet, which is not properly handled by the ldp_print function.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9601
http://www.securityfocus.com/bid/13389
http://www.securityfocus.com/archive/1/430292/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2005-421.html
http://www.redhat.com/support/errata/RHSA-2005-417.html
http://www.debian.org/security/2005/dsa-850
http://secunia.com/advisories/18146