Unrated severityNVD Advisory· Published Nov 29, 2009· Updated Jun 16, 2026
CVE-2009-4031
CVE-2009-4031
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
10cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 9 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: <2.6.32
- cpe:2.3:o:linux:linux_kernel:2.6.32:-:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:rc6:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:rc7:*:*:*:*:*:*
- (no CPE)range: <2.6.32-rc8-next-20091125
Patches
Vulnerability mechanics
References
10- www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.32-rc8-next-20091125.gznvdPatchVendor Advisory
- lists.opensuse.org/opensuse-security-announce/2010-03/msg00006.htmlnvdThird Party Advisory
- secunia.com/advisories/37720nvdThird Party Advisory
- www.openwall.com/lists/oss-security/2009/11/25/1nvdMailing ListThird Party Advisory
- www.openwall.com/lists/oss-security/2009/11/25/3nvdMailing ListThird Party Advisory
- www.securityfocus.com/bid/37130nvdThird Party AdvisoryVDB Entry
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11089nvdThird Party Advisory
- www.redhat.com/archives/fedora-package-announce/2009-December/msg00777.htmlnvdThird Party Advisory
- git.kernel.orgnvd
News mentions
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