Updated bind packages fix security vulnerability:

By making use of maliciously-constructed zones or a rogue server,
an attacker can exploit an oversight in the code BIND 9 uses to
follow delegations in the Domain Name Service, causing BIND to issue
unlimited queries in an attempt to follow the delegation. This can
lead to resource exhaustion and denial of service (up to and including
termination of the named server process) (CVE-2014-8500).