I am affected by the following problems:
CVE-2014-0591: "A Crafted Query Against an NSEC3-signed Zone Can Crash BIND"
The crashes, in my case occur due to glibc 2.18 but there are also problems that are unrelated to the glibc version being used.
In my case the problem is described here:
CVE-2014-0591 FAQ and addendum
Please update to 9.9.4_p2 at the earliest convenience. Thank you.
*** This bug has been marked as a duplicate of bug 498016 ***