CVE-2006-3626, which attempts to allow a local user to gain root privileges. The exploit relies on the kernel supporting the a.out binary format.
This vulnerability does not affect Red Hat Enterprise Linux 2.1 or 3 as they are based on 2.4 kernels.
Red Hat Enterprise Linux 4, Fedora Core 4, and Fedora Core 5 do not support the a.out binary format, causing the exploit to fail. We are not currently aware of any way to exploit this vulnerability if a.out binary format is not enabled. In addition, a default installation of these OS enables SELinux in enforcing mode. SELinux also completely blocks attempts to exploit this issue.
For more technical details of this issue please see bz#198973
The Red Hat Security response team have therefore rated this as having moderate security severity for Enterprise Linux 4. No asynchronous kernel update for this issue is currently planned; the fix for the flaw will be included in some later scheduled update.
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