CVE-2009-1242

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The vmx_set_msr function in arch/x86/kvm/vmx.c in the VMX implementation in the KVM subsystem in the Linux kernel before 2.6.29.1 on the i386 platform allows guest OS users to cause a denial of service (OOPS) by setting the EFER_LME (aka "Long mode enable") bit in the Extended Feature Enable Register (EFER) model-specific register, which is specific to the x86_64 platform.

La función vmx_set_msr en arch/x86/kvm/vmx.c en la implementación VMX en el subsistema KVM en el kernel de Linux anteriores a v2.6.29.1 en la plataforma i386 permite a los usuarios invitados del SO causar una denegación de servicio (OOPS) estableciendo el bit EFER_LME (también conocido como "modo largo habilitado") en la Extended Feature Enable Register (EFER) registro específico de modelo, lo que es específico para la plataforma x86_64.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2009-04-06 CVE Reserved
2009-04-06 CVE Published
2024-08-07 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (27)

URL	Tag	Source
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=16175a796d061833aacfbd9672235f2d2725df65	X_refsource_confirm
http://secunia.com/advisories/34478	Third Party Advisory
http://secunia.com/advisories/34981	Third Party Advisory
http://secunia.com/advisories/35120	Third Party Advisory
http://secunia.com/advisories/35121	Third Party Advisory
http://secunia.com/advisories/35226	Third Party Advisory
http://secunia.com/advisories/35387	Third Party Advisory
http://secunia.com/advisories/35394	Third Party Advisory
http://secunia.com/advisories/35656	Third Party Advisory
http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-EFER-8585	Third Party Advisory
http://wiki.rpath.com/Advisories:rPSA-2009-0084	Broken Link
http://www.globalsecuritymag.com/Vigil-nce-Linux-kernel-denial-of%2C20090402%2C8311	X_refsource_misc
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.1	Broken Link
http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.29-git1.log	Broken Link
http://www.securityfocus.com/archive/1/503610/100/0/threaded	Mailing List
http://www.securityfocus.com/bid/34331	Third Party Advisory
http://www.vupen.com/english/advisories/2009/0924	Broken Link
https://exchange.xforce.ibmcloud.com/vulnerabilities/49594	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://openwall.com/lists/oss-security/2009/04/01/3	2023-11-07
http://patchwork.kernel.org/patch/15549	2023-11-07
https://bugzilla.redhat.com/show_bug.cgi?id=502109	2023-11-07

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00002.html	2023-11-07
http://www.debian.org/security/2009/dsa-1787	2023-11-07
http://www.debian.org/security/2009/dsa-1800	2023-11-07
http://www.ubuntu.com/usn/usn-793-1	2023-11-07
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01126.html	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 2.6.29.1 Search vendor "Linux" for product "Linux Kernel" and version " < 2.6.29.1"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				11.0 Search vendor "Opensuse" for product "Opensuse" and version "11.0"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				11.1 Search vendor "Opensuse" for product "Opensuse" and version "11.1"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				4.0 Search vendor "Debian" for product "Debian Linux" and version "4.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				5.0 Search vendor "Debian" for product "Debian Linux" and version "5.0"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				6.06 Search vendor "Canonical" for product "Ubuntu Linux" and version "6.06"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				8.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "8.04"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				8.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "8.10"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				9.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "9.04"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				10 Search vendor "Fedoraproject" for product "Fedora" and version "10"		-		Affected