PostgreSQL 7.3.x before 7.3.14, 7.4.x before 7.4.12, 8.0.x before 8.0.7, and 8.1.x before 8.1.3, when compiled with Asserts enabled, allows local users to cause a denial of service (server crash) via a crafted SET SESSION AUTHORIZATION command, a different vulnerability than CVE-2006-0553.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24719
http://www.vupen.com/english/advisories/2006/0605
http://www.ubuntu.com/usn/usn-258-1
http://www.trustix.org/errata/2006/0008
http://www.securityfocus.com/bid/16650
http://www.securityfocus.com/archive/1/425037/100/0/threaded
http://www.postgresql.org/docs/8.1/static/release.html#RELEASE-8-1-3
http://www.openpkg.org/security/OpenPKG-SA-2006.004-postgresql.html
http://securityreason.com/securityalert/498
http://secunia.com/advisories/19035