xinetd 2.3.4 leaks file descriptors for the signal pipe to services that are launched by xinetd, which could allow those services to cause a denial of service via the pipe.
marc.info/?l=bugtraq&m=102935383506155&w=2
www.iss.net/security_center/static/9844.php
www.linux-mandrake.com/en/security/2002/MDKSA-2002-053.php
www.redhat.com/support/errata/RHSA-2002-196.html
www.redhat.com/support/errata/RHSA-2003-228.html
www.securityfocus.com/bid/5458
www.debian.org/security/2002/dsa-151