Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Uncontrolled recursion in PostgreSQL SSL and GSS negotiation allows an attacker able to connect to a PostgreSQL AF_UNIX socket to achieve sustained denial of service.  If SSL and GSS are both disabled, an attacker can do the same via access to a PostgreSQL TCP socket.  Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.