The version of Linux kernel as shipped with Red Hat Enterprise Linux 4, 5, and 6 as they did not include upstream commit a1a541d8 and a25ee920 that introduced the problem. This has been addressed in Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-1253.html.
This requires debugfs to be mounted on a local system in order to have access
to the custom_method file. Debugfs is not mounted by default. You need to run
"mount -t debugfs nodev /sys/kernel/debug" as root first.
CVSS v2 metrics
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Red Hat Security Errata
|Red Hat MRG Grid for RHEL 6 Server v.2 (kernel-rt)||RHSA-2011:1253||2011-09-12|
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