The MITRE CVE dictionary describes this issue as:
The (1) krshd and (2) v4rcp applications in (a) MIT Kerberos 5 (krb5) up to 1.5, and 1.4.x before 1.4.4, when running on Linux and AIX, and (b) Heimdal 0.7.2 and earlier, do not check return codes for setuid calls, which allows local users to gain privileges by causing setuid to fail to drop privileges using attacks such as resource exhaustion.
Find out more about CVE-2006-3083 from the
MITRE CVE dictionary dictionary and
Red Hat Enterprise Linux 5 is not vulnerable to this issue as it contains a backported patch.