CVE-2009-1242

MEDIUM

Description

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.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=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,20090402,8311

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

Details

Source: MITRE

Published: 2009-04-06

Updated: 2018-10-10

Type: CWE-264

Risk Information

CVSS v2.0

Base Score: 4.9

Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:C)

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM