resolver.c in named in ISC BIND 9.10.x before 9.10.3-P4, when DNS cookies are enabled, allows remote attackers to cause a denial of service (INSIST assertion failure and daemon exit) via a malformed packet with more than one cookie option.
https://security.gentoo.org/glsa/201610-07
https://kb.isc.org/article/AA-01380
https://kb.isc.org/article/AA-01351
http://www.securitytracker.com/id/1035238
http://www.securityfocus.com/bid/84290
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/179904.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178831.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181036.html