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[SA31172] Linux Kernel LDT Buffer Size Handling Vulnerability

From: Secunia Security Advisories (sec-advsecunia.com)
Date: Thu Jul 24 2008 - 16:47:05 CDT

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TITLE:
Linux Kernel LDT Buffer Size Handling Vulnerability

SECUNIA ADVISORY ID:
SA31172

VERIFY ADVISORY:
http://secunia.com/advisories/31172/

CRITICAL:
Less critical

IMPACT:
Privilege escalation, DoS

WHERE:
Local system

OPERATING SYSTEM:
Linux Kernel 2.6.x
http://secunia.com/product/2719/

DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service) and potentially gain escalated privileges.

The vulnerability is caused due to an error within the LDT buffer
size handling on x86_64 machines and can be exploited to crash a
system or execute arbitrary code with kernel privileges.

The vulnerability is reported in versions prior to 2.6.25.11.

SOLUTION:
Update to version 2.6.25.11.

PROVIDED AND/OR DISCOVERED BY:
Reported in a SUSE advisory.

ORIGINAL ADVISORY:
SUSE:
http://lists.opensuse.org/opensuse-security-announce/2008-07/msg00009.html

Linux Kernel 2.6.25.11 ChangeLog:
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25.11

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