Red Hat does not consider this to a security issue. In order for the crash condition to be observed, the RADIUS server must already be unresponsive for extended periods of time, the net result of which is that you cannot DoS an already-unresponsive server. Other specialized conditions are required as well, that make an attack using this flaw unviable.
CVSS v2 metrics
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Affected Packages State
|Red Hat Enterprise Linux 3||freeradius||Not affected|
|Red Hat Enterprise Linux 4||freeradius||Not affected|
|Red Hat Enterprise Linux 5||freeradius||Not affected|
|Red Hat Enterprise Linux 6||freeradius||Affected|