CVE-2009-1242

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Summary

CVECVE-2009-1242
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2009-04-06 14:30:00 UTC
Updated2026-04-23 00:35:47 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v2.0 4.9 from [email protected]

AV:L/AC:L/Au:N/C:N/I:N/A:C

Problem Types: CWE-20 | n/a

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

AV:L/AC:L/Au:N/C:N/I:N/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 6.06 All All All
Operating System Canonical Ubuntu Linux 8.04 All All All
Operating System Canonical Ubuntu Linux 8.10 All All All
Operating System Canonical Ubuntu Linux 9.04 All All All
Operating System Debian Debian Linux 4.0 All All All
Operating System Debian Debian Linux 5.0 All All All
Operating System Fedoraproject Fedora 10 All All All
Operating System Linux Linux Kernel All All All All
Operating System Opensuse Opensuse 11.0 All All All
Operating System Opensuse Opensuse 11.1 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Ubuntu update for linux and linux-source-2.6.15 - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
Debian update for linux-2.6.24 - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
rPath update for kernel - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
Linux Kernel "udp_get_next()" and "vms_set_msr()" Denial of Service - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
Webmail - OVH af854a3a-2127-422b-91ae-364da2661108 www.vupen.com Broken Link
Debian -- Security Information -- DSA-1787-1 linux-2.6.24 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
SecurityFocus af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
USN-793-1: Linux kernel vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Third Party Advisory
SUSE update for kernel - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
IBM X-Force Exchange af854a3a-2127-422b-91ae-364da2661108 exchange.xforce.ibmcloud.com Third Party Advisory, VDB Entry
git.kernel.org af854a3a-2127-422b-91ae-364da2661108 git.kernel.org
[security-announce] SUSE Security Announcement: Linux kernel (SUSE-SA:20 af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Mailing List, Third Party Advisory
Fedora update for kernel - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
404: File not found af854a3a-2127-422b-91ae-364da2661108 www.kernel.org Broken Link
Debian update for linux-2.6 - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
Vigil@nce vulnerability - Linux kernel: denial of service via EFER af854a3a-2127-422b-91ae-364da2661108 vigilance.fr Third Party Advisory
[13/45] KVM: VMX: Dont allow uninhibited access to EFER on i386 - Patchwork af854a3a-2127-422b-91ae-364da2661108 patchwork.kernel.org Patch, Vendor Advisory
Linux Kernel 'EFER_LME' Local Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Debian -- Security Information -- DSA-1800-1 linux-2.6 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
[security-announce] SUSE Security Announcement: Linux kernel (SUSE-SA:20 af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Mailing List, Third Party Advisory
[SECURITY] Fedora 10 Update: kernel-2.6.27.24-170.2.68.fc10 af854a3a-2127-422b-91ae-364da2661108 www.redhat.com Third Party Advisory
oss-security - CVE request: kernel: KVM: VMX: Dont allow uninhibited access to EFER on i386 af854a3a-2127-422b-91ae-364da2661108 openwall.com Mailing List, Patch, Third Party Advisory
404: File not found af854a3a-2127-422b-91ae-364da2661108 www.kernel.org Broken Link
SUSE update for kernel - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
Vigil@nce: Linux kernel, denial of service via EFER - Global Security Mag Online af854a3a-2127-422b-91ae-364da2661108 www.globalsecuritymag.com
Bug 502109 – CVE-2009-1242 kernel: x86 guest OS can crash the system by writing to the EFER af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Patch, Third Party Advisory
wiki.rpath.com/Advisories:rPSA-2009-0084 af854a3a-2127-422b-91ae-364da2661108 wiki.rpath.com Broken Link
kernel/git/torvalds/linux.git - Linux kernel source tree MITRE git.kernel.org
Vigil@nce: Linux kernel, denial of service via EFER - Global Security Mag Online MITRE www.globalsecuritymag.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

OrganizationPublishedContributorStatement
Red Hat2009-04-07Tomas HogerNot vulnerable. This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, 5 or Red Hat Enterprise MRG.

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