This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 3, 4 and Red Hat Enterprise MRG. Shipped kernels do not include upstream commit d025c9db that introduced the problem.
This upstream commit was backported in Red Hat Enterprise Linux 5 via RHSA-2009:0225. It was later reported and addressed in Red Hat Enterprise Linux 5 via https://rhn.redhat.com/errata/RHSA-2010-0046.html
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).
Red Hat Security Errata
|Red Hat Enterprise Linux 5 (kernel)||RHSA-2010:0046||2010-01-19|