The Berkeley Internet Name Domain (BIND) is an implementation of the DomainName System (DNS) protocols. BIND includes a DNS server (named); a resolverlibrary (routines for applications to use when interfacing with DNS); andtools for verifying that the DNS server is operating correctly.A denial of service flaw was found in the way BIND processed certainrecords with malformed class attributes. A remote attacker could use thisflaw to send a query to request a cached record with a malformed classattribute that would cause named functioning as an authoritative orrecursive server to crash. (CVE-2015-8000)Note: This issue affects authoritative servers as well as recursiveservers, however authoritative servers are at limited risk if they performauthentication when making recursive queries to resolve addresses forservers listed in NS RRSETs.Red Hat would like to thank ISC for reporting this issue.All bind users are advised to upgrade to these updated packages, whichcontain a backported patch to correct this issue. After installing theupdate, the BIND daemon (named) will be restarted automatically.