In Feburary, iDefense notified us of a flaw in the iso9660 filesystem component of the Linux kernel. The Linux kernel performs no length checking on symbolic links stored on an ISO9660 filesystem, allowing a malformed CD to perform an arbitrary length overflow in kernel memory. In order to exploit this vulnerability, an attacker must be able to mount a maliciously constructed filesystem (for example by being at the machine in order to insert a cdrom) This issue is embargoed until 1400UTC on April 14th 2004.
A fix for this problem has just now been committed to the Taroon U2 kernel patch pool in kernel version 2.4.21-14.EL.
Removing embargo
RHSA-2003:183 is in progress and currently in QA.
An errata has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2004-183.html