major vulnerability to BIND 9 (CVE-2015-5477)

http://arstechnica.com/security/2015/07/major-flaw-could-let-lone-wolf-hacker-bring-down-huge-swath-of-internet/

The flaw, which involves the way that Bind handles some queries related to transaction key records, resides in all major versions of the software from 9.1.0 to 9.8.x, 9.9.0 to 9.9.7-P1, and 9.10.0 to 9.10.2-P2. Attackers can exploit it by sending vulnerable servers a malformed packet that's trivial to create. Vulnerable servers, in turn, will promptly crash.