Security Advisory - RHSA-2004:166-08
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Summary:
Updated kernel packages resolve security vulnerabilities

Updated kernel packages that fix several minor security vulnerabilities are now available

Description:
The Linux kernel handles the basic functions of the operating system.

iDefense reported a buffer overflow flaw in the ISO9660 filesystem code.
An attacker could create a malicious filesystem in such a way that they could gain root privileges if that filesystem is mounted.  The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0109 to this issue.

Solar Designer from OpenWall discovered a minor information leak in the ext3 filesystem code due to the lack of initialization of journal descriptor blocks.  This flaw has only minor security implications and exploitation requires privileged access to the raw device.  The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0177 to this issue.

These packages also contain an updated fix with additional checks for issues in the R128 Direct Render Infrastructure.  The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0003 to this issue.

Additionally, hardening of the mremap function was applied to prevent a potential local denial of service attack.

All users are advised to upgrade to these errata packages, which contain backported security patches that correct these issues.
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