A vulnerability was discovered and corrected in bind:

Cache lookup could return RRSIG data associated with nonexistent
records, leading to an assertion failure. [ISC RT #26590]
(CVE-2011-4313).

The updated packages have been upgraded to bind 9.7.4-P1 and 9.8.1-P1
which is not vulnerable to this issue.

Update:

Packages provided for Mandriva Enterprise Server 5.2 and Mandriva
Linux 2010.2 with the MDVSA-2011:176 and MDVSA-2011:176-1 advisory
had wrong release numbers effectively preventing installation without
excessive force due previous packaging mistakes. This advisory provides
corrected packages to address the problem.