NVD - CVE-2009-4031

CVE-2009-4031 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

Description

The do_insn_fetch function in arch/x86/kvm/emulate.c in the x86 emulator in the KVM subsystem in the Linux kernel before 2.6.32-rc8-next-20091125 tries to interpret instructions that contain too many bytes to be valid, which allows guest OS users to cause a denial of service (increased scheduling latency) on the host OS via unspecified manipulations related to SMP support.

Source: MITRE
Description Last Modified: 11/29/2009

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 7.8 HIGH
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 10.0

Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
http://git.kernel.org/?p=linux/kernel/git/avi/kvm.git;a=commit;h=e42d9b8141d1f54ff72ad3850bb110c95a5f3b88
http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00006.html
http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.32-rc8-next-20091125.gz	Patch Vendor Advisory
http://www.openwall.com/lists/oss-security/2009/11/25/1
http://www.openwall.com/lists/oss-security/2009/11/25/3
http://www.securityfocus.com/bid/37130
https://bugzilla.redhat.com/show_bug.cgi?id=541160
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11089
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00777.html

References to Check Content

Identifier:: oval:org.mitre.oval:def:11089
Check System:: http://oval.mitre.org/XMLSchema/oval-definitions-5
Hyperlink:: http://oval.mitre.org/repository/data/DownloadDefinition?id=oval:org.mitre.oval:def:11089

Technical Details

Vulnerability Type (View All)

Input Validation (CWE-20)

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Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2009-4031
NVD Published Date:
11/29/2009
NVD Last Modified:
09/18/2017

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National Vulnerability Database