bind -- multiple vulnerabilities

ISC reports:

Named is potentially vulnerable to the OpenSSL vulnerability described in CVE-2015-3193.
Incorrect reference counting could result in an INSIST
failure if a socket error occurred while performing a lookup. This flaw
is disclosed in CVE-2015-8461. [RT#40945]
Insufficient testing when parsing a message allowed records
with an incorrect class to be be accepted, triggering a REQUIRE failure
when those records were subsequently cached. This flaw is disclosed in
CVE-2015-8000. [RT #40987]