isc-bind reports:
2019-06-21

A race condition when discarding malformed packets can cause BIND to exit with an assertion failure.

CVE-2019-6471
isc-bind-9.11.8v0.tgz

isc-bind-9.11.8v0-geoip.tgz

isc-bind-9.11.8v0-no_ssl.tgz