CVE-2009-4031

Linux kernel <2.6.32-rc8-next - DoS

Title source: llm

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.

References (10)

[Patch] http://git.kernel.org/?p=linux/kernel/git/avi/kvm.git%3Ba=commit%3Bh=e42d9b8141d1f54ff72ad3850bb110c95a5f3b88

[Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00006.html

[Third Party Advisory] http://secunia.com/advisories/37720

[Patch, Vendor Advisory] http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.32-rc8-next-20091125.gz

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2009/11/25/1

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2009/11/25/3

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/37130

[Issue Tracking, Third Party Advisory] https://bugzilla.redhat.com/show_bug.cgi?id=541160

[Third Party Advisory] https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11089

[Third Party Advisory] https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00777.html

Scores

EPSS 0.0211

EPSS Percentile 83.9%

Classification

CWE

CWE-20

Status draft

Affected Products (9)

linux/linux_kernel < 2.6.32

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

Timeline

Published Nov 29, 2009

Tracked Since Feb 18, 2026