ISC BIND 9.4.x, 9.5.x, 9.6.x, and 9.7.x before 9.7.6-P2; 9.8.x before 9.8.3-P2; 9.9.x before 9.9.1-P2; and 9.6-ESV before 9.6-ESV-R7-P2, when DNSSEC validation is enabled, does not properly initialize the failing-query cache, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) by sending many queries.
https://kb.isc.org/article/AA-00729
http://www.ubuntu.com/usn/USN-1518-1
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2012&m=slackware-security.536004
http://www.securitytracker.com/id?1027296
http://www.debian.org/security/2012/dsa-2517
http://support.apple.com/kb/HT5880
http://secunia.com/advisories/51096
http://rhn.redhat.com/errata/RHSA-2012-1123.html
http://rhn.redhat.com/errata/RHSA-2012-1122.html
http://lists.opensuse.org/opensuse-updates/2012-08/msg00015.html
http://lists.opensuse.org/opensuse-updates/2012-08/msg00013.html
http://lists.apple.com/archives/security-announce/2013/Sep/msg00002.html