The DNSSEC validation library (libval) library in dnssec-tools before 1.3.1 does not properly check that the signing key is the APEX trust anchor, which might allow attackers to conduct unspecified attacks.
https://www.redhat.com/archives/fedora-package-announce/2008-February/msg00845.html
https://www.redhat.com/archives/fedora-package-announce/2008-February/msg00820.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/40836
http://www.vupen.com/english/advisories/2008/0673/references
http://www.securityfocus.com/bid/27998