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
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Red Hat Security Errata
|Red Hat Enterprise Linux 5 (kernel)||RHSA-2010:0046||2010-01-19|