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CVE
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CVE-2009-4031

Date: (C)2009-11-29   (M)2017-09-22
 
CVSS Score: 7.8Access Vector: NETWORK
Exploitability Subscore: 10.0Access Complexity: LOW
Impact Subscore: 6.9Authentication: NONE
 Confidentiality: NONE
 Integrity: NONE
 Availability: COMPLETE











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.

Reference:
BID-37130
SECUNIA-37720
FEDORA-2009-13098
SUSE-SA:2010:018
http://www.openwall.com/lists/oss-security/2009/11/25/3
http://www.openwall.com/lists/oss-security/2009/11/25/1
http://git.kernel.org/?p=linux/kernel/git/avi/kvm.git;a=commit;h=e42d9b8141d1f54ff72ad3850bb110c95a5f3b88
http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.32-rc8-next-20091125.gz
https://bugzilla.redhat.com/show_bug.cgi?id=541160

CPE    322
cpe:/o:linux:linux_kernel:2.6.23.1
cpe:/o:linux:linux_kernel:2.6.20.19
cpe:/o:linux:linux_kernel:2.6.23.2
cpe:/o:linux:linux_kernel:2.6.23.3
...
CWE    1
CWE-20
OVAL    6
oval:org.mitre.oval:def:6977
oval:org.secpod.oval:def:600322
oval:org.secpod.oval:def:201969
oval:org.secpod.oval:def:700020
...

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