A defect in code added to support QNAME minimization can cause named to exit with an assertion failure if a forwarder returns a referral rather than resolving the query. This affects BIND versions 9.14.0 up to 9.14.6, and 9.15.0 up to 9.15.4.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-6476.json"