Vulnerability Report

CVE-2009-1242

Title: Canonical Ubuntu Linux Denial of Service (DoS)

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2009-1242.

CWE Category CWE-20
Published Date Apr 06, 2009
Modified Date Jun 16, 2026
Exploit Status Not Found
Score 4.9 CVSS v2.0
Exploit Probability (EPSS)
0.47%

Vulnerability Summary

CVE-2009-1242: 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.

Impacted Vendors

L
linux 1
D
debian 1
U
ubuntu 2
C
canonical 1
R
redhat 1
O
opensuse 1
F
fedoraproject 1
S
suse 1

Reference Links

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=16175a796d061833aacfbd9672235f2d2725df65 http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00002.html http://openwall.com/lists/oss-security/2009/04/01/3 http://patchwork.kernel.org/patch/15549/ http://secunia.com/advisories/34478 http://secunia.com/advisories/34981 http://secunia.com/advisories/35120 http://secunia.com/advisories/35121 http://secunia.com/advisories/35226 http://secunia.com/advisories/35387 http://secunia.com/advisories/35394 http://secunia.com/advisories/35656 http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-EFER-8585 http://wiki.rpath.com/Advisories:rPSA-2009-0084 http://www.debian.org/security/2009/dsa-1787 http://www.debian.org/security/2009/dsa-1800 http://www.globalsecuritymag.com/Vigil-nce-Linux-kernel-denial-of%2C20090402%2C8311 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.1 http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.29-git1.log http://www.securityfocus.com/archive/1/503610/100/0/threaded http://www.securityfocus.com/bid/34331 http://www.ubuntu.com/usn/usn-793-1 http://www.vupen.com/english/advisories/2009/0924 https://bugzilla.redhat.com/show_bug.cgi?id=502109 https://exchange.xforce.ibmcloud.com/vulnerabilities/49594 https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01126.html http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=16175a796d061833aacfbd9672235f2d2725df65 http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00002.html http://openwall.com/lists/oss-security/2009/04/01/3 http://patchwork.kernel.org/patch/15549/ http://secunia.com/advisories/34478 http://secunia.com/advisories/34981 http://secunia.com/advisories/35120 http://secunia.com/advisories/35121 http://secunia.com/advisories/35226 http://secunia.com/advisories/35387 http://secunia.com/advisories/35394 http://secunia.com/advisories/35656 http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-EFER-8585 http://wiki.rpath.com/Advisories:rPSA-2009-0084 http://www.debian.org/security/2009/dsa-1787 http://www.debian.org/security/2009/dsa-1800 http://www.globalsecuritymag.com/Vigil-nce-Linux-kernel-denial-of%2C20090402%2C8311 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.1 http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.29-git1.log http://www.securityfocus.com/archive/1/503610/100/0/threaded http://www.securityfocus.com/bid/34331 http://www.ubuntu.com/usn/usn-793-1 http://www.vupen.com/english/advisories/2009/0924 https://bugzilla.redhat.com/show_bug.cgi?id=502109 https://exchange.xforce.ibmcloud.com/vulnerabilities/49594 https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01126.html
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
4.9
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:L/AC:L/Au:N/C:N/I:N/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2009-1242 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A
Complexity N/A
Privileges N/A
Interaction NONE
CVSS Vector String AV:L/AC:L/Au:N/C:N/I:N/A:C

Affected Stack

No specific products linked.