Vulnerability Description
The do_insn_fetch function in arch/x86/kvm/emulate.c in the x86 emulator in the KVM subsystem in the Linux kernel before 2.6.32-rc8-next-20091125 tries to interpret instructions that contain too many bytes to be valid, which allows guest OS users to cause a denial of service (increased scheduling latency) on the host OS via unspecified manipulations related to SMP support.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 2.6.32 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/?p=linux/kernel/git/avi/kvm.git%3Ba=commit%3Bh=e42d9b8141d
- http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00006.htmlThird Party Advisory
- http://secunia.com/advisories/37720Third Party Advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.32-rc8-next-20091125PatchVendor Advisory
- http://www.openwall.com/lists/oss-security/2009/11/25/1Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2009/11/25/3Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/37130Third Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=541160Issue TrackingThird Party Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Third Party Advisory
- https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00777.hThird Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/avi/kvm.git%3Ba=commit%3Bh=e42d9b8141d
- http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00006.htmlThird Party Advisory
- http://secunia.com/advisories/37720Third Party Advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.32-rc8-next-20091125PatchVendor Advisory
- http://www.openwall.com/lists/oss-security/2009/11/25/1Mailing ListThird Party Advisory
FAQ
What is CVE-2009-4031?
CVE-2009-4031 is a vulnerability with a CVSS score of 7.8 (HIGH). The do_insn_fetch function in arch/x86/kvm/emulate.c in the x86 emulator in the KVM subsystem in the Linux kernel before 2.6.32-rc8-next-20091125 tries to interpret instructions that contain too many ...
How severe is CVE-2009-4031?
CVE-2009-4031 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2009-4031?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.