31464 : Linux kernel EFLAGS Restore SYSENTER DoS
Printer | http://osvdb.org/31464 | Email This | Edit Vulnerability

Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
4	521	over 6 years ago	over 5 years ago	0 times	15%

This Entry needs help! It is only 15% Complete. Click the edit link above to add more information.

Contributing is fast and easy, and benefits the entire security community.

Timeline

Disclosure Date
2006-12-10

Description

<em style='font-weight:bold;'>(Description Provided by <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=2006-5755" target="_blank">CVE</a>)</em> : Linux kernel before 2.6.18, when running on x86_64 systems, does not properly save or restore EFLAGS during a context switch, which allows local users to cause a denial of service (crash) by causing SYSENTER to set an NT flag, which can trigger a crash on the IRET of the next task.

Classification

Attack Type: Denial of Service
Impact: Loss of Availability
Disclosure: Vendor Verified

Products

Unknown or Incomplete

References

CVE ID: 2006-5755 (see also: NVD)
Secunia Advisory ID: 23361 24098 25691 26620 26994 32485
Vendor Specific News/Changelog Entry: http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=658fdbef66e5e9be79b457edc2cbbb3add840aa9
http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.18-git13.log
Other Advisory URL: http://lists.rpath.com/pipermail/security-announce/2007-June/000200.html
http://www.debian.org/security/2007/dsa-1381
http://www.mandriva.com/security/advisories?name=MDKSA-2007:171
http://www.ubuntu.com/usn/usn-395-1
https://lists.ubuntu.com/archives/ubuntu-security-announce/2007-February/000483.html

Tools & Filters

	25968 26211 28005

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 4.9
Source: nvd.nist.gov | Generated: 2007-01-09 | Disagree?

Comments

Add Comment Hide Add Comment

No Comments.

The database information may change without any notice. Use of the information constitutes acceptance for use in an AS IS condition, and there are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the copyright holder or distributor (OSVDB or OSF) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.