FreeBSD -- named(8) DNSSEC validation Denial of Service

Problem description:

BIND 9 stores a cache of query names that are known to be failing
due to misconfigured name servers or a broken chain of trust.
Under high query loads, when DNSSEC validation is active, it is
possible for a condition to arise in which data from this cache of
failing queries could be used before it was fully initialized,
triggering an assertion failure.