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.