A use-after-free flaw leading to denial of service was found in the way BIND before 9.11.2.P1, 9.10.6-P1 and 9.9.11-P1 internally handled cleanup operations on upstream recursion fetch contexts. A remote attacker could potentially use this flaw to make named, acting as a DNSSEC validating resolver, exit unexpectedly with an assertion failure via a specially crafted DNS request.
A use-after-free flaw leading to denial of service was found in the way BIND before 9.11.2.P1, 9.10.6-P1 and 9.9.11-P1 internally handled cleanup operations on upstream recursion fetch contexts. A remote attacker could potentially use this flaw to make named, acting as a DNSSEC validating resolver, exit unexpectedly with an assertion failure via a specially crafted DNS request.
https://kb.isc.org/article/AA-01542 https://source.isc.org/cgi-bin/gitweb.cgi?p=bind9.git;a=commitdiff;h=053b51c4dbd28f6e4de71ce4268a6f606025d76d