CVE-2009-1242

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.

Category

4.9
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.07%
Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory debian.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.29-git1.log broken link
http://www.globalsecuritymag.com/Vigil-nce-Linux-kernel-denial-of%2C20090402%2C8311
https://exchange.xforce.ibmcloud.com/vulnerabilities/49594 vdb entry third party advisory
http://secunia.com/advisories/35226 third party advisory
http://patchwork.kernel.org/patch/15549/ patch vendor advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.1 broken link
http://secunia.com/advisories/34478 third party advisory
http://www.securityfocus.com/bid/34331 vdb entry third party advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=16175a796d061833aacfbd9672235f2d2725df65
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01126.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00002.html mailing list third party advisory vendor advisory
http://secunia.com/advisories/35656 third party advisory
http://www.securityfocus.com/archive/1/503610/100/0/threaded mailing list vdb entry third party advisory
http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-EFER-8585 third party advisory
http://secunia.com/advisories/35120 third party advisory
http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html mailing list third party advisory vendor advisory
http://www.ubuntu.com/usn/usn-793-1 third party advisory vendor advisory
http://secunia.com/advisories/34981 third party advisory
http://www.debian.org/security/2009/dsa-1800 third party advisory vendor advisory
http://secunia.com/advisories/35387 third party advisory
http://www.debian.org/security/2009/dsa-1787 third party advisory vendor advisory
http://wiki.rpath.com/Advisories:rPSA-2009-0084 broken link
http://openwall.com/lists/oss-security/2009/04/01/3 mailing list third party advisory patch
http://secunia.com/advisories/35121 third party advisory
http://www.vupen.com/english/advisories/2009/0924 vdb entry broken link
https://bugzilla.redhat.com/show_bug.cgi?id=502109 issue tracking third party advisory patch
http://secunia.com/advisories/35394 third party advisory

Frequently Asked Questions

What is the severity of CVE-2009-1242?
CVE-2009-1242 has been scored as a medium severity vulnerability.
How to fix CVE-2009-1242?
To fix CVE-2009-1242, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-1242 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2009-1242 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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