The vmx_set_msr function in arch/x86/kvm/vmx.c in the VMX implementation in...

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.

References

• http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.29-git1.log
• http://www.globalsecuritymag.com/Vigil-nce-Linux-kernel-denial-of%2C20090402%2C8311
• https://exchange.xforce.ibmcloud.com/vulnerabilities/49594
• http://secunia.com/advisories/35226
• http://patchwork.kernel.org/patch/15549/
• http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.1
• http://secunia.com/advisories/34478
• http://www.securityfocus.com/bid/34331
• 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
• http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00002.html
• http://secunia.com/advisories/35656
• http://www.securityfocus.com/archive/1/503610/100/0/threaded
• http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-EFER-8585
• http://secunia.com/advisories/35120
• http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html
• http://www.ubuntu.com/usn/usn-793-1
• http://secunia.com/advisories/34981
• http://www.debian.org/security/2009/dsa-1800
• http://secunia.com/advisories/35387
• http://www.debian.org/security/2009/dsa-1787
• http://wiki.rpath.com/Advisories:rPSA-2009-0084
• http://openwall.com/lists/oss-security/2009/04/01/3
• http://secunia.com/advisories/35121
• http://www.vupen.com/english/advisories/2009/0924
• https://bugzilla.redhat.com/show_bug.cgi?id=502109
• http://secunia.com/advisories/35394