24639 : Linux Kernel on Intel EM64T SYSRET Local DoS
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
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Timeline

Disclosure Date
2006-04-17

Description

The Linux Kernel contains a flaw that may allow a local denial of service. The issue is triggered when control is returned using SYSRET. The way Intel EM64T handles exceptions with uncanonical addresses might cause a Denial of Service, and will result in loss of availability for the platform.

Classification

Location: Local Access Required
Attack Type: Denial of Service
Impact: Loss of Availability
Exploit: Exploit Unknown
Disclosure: OSVDB Verified, Vendor Verified

Technical

The issue is only present on Intel EM64T CPUs.

Solution

Upgrade to version 2.6.16.5 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Linux

Kernel

2.6.16.4

References

Bugtraq ID: 17541
Secunia Advisory ID: 19639 19735 20157 20237 20398 20716 21136 21179 21498 21745 21983
CVE ID: 2006-0744 (see also: NVD)
SCIP VulDB ID: 2172
ISS X-Force ID: 25869
Vendor Specific News/Changelog Entry: http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.5
Vendor Specific Advisory URL: http://lists.suse.com/archive/suse-security-announce/2006-Aug/0005.html
http://lists.suse.com/archive/suse-security-announce/2006-Jul/0008.html
http://support.avaya.com/elmodocs2/security/ASA-2006-161.htm
http://support.avaya.com/elmodocs2/security/ASA-2006-180.htm
http://www.mandriva.com/security/advisories?name=MDKSA-2006:086
http://www.novell.com/linux/security/advisories/2006-05-31.html
http://www.ubuntu.com/usn/usn-302-1
RedHat RHSA: RHSA-2006:0437 RHSA-2006:0493

Tools & Filters

	21252 21253 21575 21592 22086 27877

Credit

Ernie Petrides -
Asit B. Mallick -

CVSSv2 Score

CVSSv2 Base Score = 4.9
Source: nvd.nist.gov | Generated: 2006-04-18 | Disagree?

Blogs

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