This issue has been fixed in Red Hat Enterprise Linux 5 via https://rhn.redhat.com/errata/RHSA-2009-0427.html . udev packages as shipped in Red Hat Enterprise Linux 4 were not affected by this flaw, as they do not use netlink sockets for communication. udev is not shipped in Red Hat Enterprise Linux 2.1 and 3.
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Red Hat Security Errata
|Red Hat Enterprise Linux 5 (udev)||RHSA-2009:0427||2009-04-16|
AcknowledgementsRed Hat would like to thank Sebastian Krahmer of the SUSE Security Team for responsibly reporting this flaw.
CVE description copyright © 2017, The MITRE Corporation