Upstream Debian package version 1:9.8.4.dfsg.P1-6+nmu2+deb7u13 fixes this issue: * named in ISC BIND 9.x before 9.9.9-P4 allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a DNAME record in the answer section of a response to a recursive query, related to db.c and resolver.c. (CVE-2016-8864)
*** This bug has been marked as a duplicate of bug 42747 ***