dhcpd in ISC DHCP 3.0.4 and 3.1.1, when the dhcp-client-identifier and hardware ethernet configuration settings are both used, allows remote attackers to cause a denial of service (daemon crash) via unspecified requests.
https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00340.html
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01177.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/51717
http://www.securityfocus.com/bid/35669
http://www.mandriva.com/security/advisories?name=MDVSA-2009:154
http://www.debian.org/security/2009/dsa-1833
http://secunia.com/advisories/37342
http://secunia.com/advisories/36457