Memory leak in Paul Rombouts pdnsd before 1.2.4 allows remote attackers to cause a denial of service (memory consumption) via a DNS query with an unsupported (1) QTYPE or (2) QCLASS, as demonstrated by the OUSPG PROTOS DNS test suite.
https://exchange.xforce.ibmcloud.com/vulnerabilities/26081
http://www.vupen.com/english/advisories/2006/1528
http://www.vupen.com/english/advisories/2006/1505
http://www.securityfocus.com/bid/17694
http://www.phys.uu.nl/~rombouts/pdnsd.html
http://www.niscc.gov.uk/niscc/docs/re-20060425-00312.pdf?lang=en
http://www.niscc.gov.uk/niscc/docs/br-20060425-00311.html?lang=en
http://www.kb.cert.org/vuls/id/955777
http://www.gentoo.org/security/en/glsa/glsa-200605-10.xml
http://securitytracker.com/id?1015989