Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 2.6.29.1 |
| Opensuse | Opensuse | 11.0 |
| Debian | Debian Linux | 4.0 |
| Canonical | Ubuntu Linux | 6.06 |
| Fedoraproject | Fedora | 10 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00002.htmlMailing ListThird Party Advisory
- http://openwall.com/lists/oss-security/2009/04/01/3Mailing ListPatchThird Party Advisory
- http://patchwork.kernel.org/patch/15549/PatchVendor Advisory
- http://secunia.com/advisories/34478Third Party Advisory
- http://secunia.com/advisories/34981Third Party Advisory
- http://secunia.com/advisories/35120Third Party Advisory
- http://secunia.com/advisories/35121Third Party Advisory
- http://secunia.com/advisories/35226Third Party Advisory
- http://secunia.com/advisories/35387Third Party Advisory
- http://secunia.com/advisories/35394Third Party Advisory
- http://secunia.com/advisories/35656Third Party Advisory
- http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-EFER-8585Third Party Advisory
- http://wiki.rpath.com/Advisories:rPSA-2009-0084Broken Link
FAQ
What is CVE-2009-1242?
CVE-2009-1242 is a vulnerability with a CVSS score of 4.9 (MEDIUM). 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 servic...
How severe is CVE-2009-1242?
CVE-2009-1242 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2009-1242?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Opensuse Opensuse, Debian Debian Linux, Canonical Ubuntu Linux, Fedoraproject Fedora.