PostgreSQL is an open source object-relational database management system.
PostgreSQL does not correctly check the data types of the SQL function arguments under unspecified circumstances nor the format of the provided tables in the query planner.
A remote authenticated attacker could send specially crafted queries to the server that could result in a server crash and possibly the unauthorized reading of some database content or arbitrary memory.
There is no known workaround at this time.
All PostgreSQL users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose "dev-db/postgresql"