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CVE
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CVE-2009-4031Date: (C)2009-11-29   (M)2018-02-19


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 and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : CVSS Score : 7.8
Exploit Score: Exploit Score: 10.0
Impact Score: Impact Score: 6.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: Access Vector: NETWORK
Attack Complexity: Access Complexity: LOW
Privileges Required: Authentication: NONE
User Interaction: Confidentiality: NONE
Scope: Integrity: NONE
Confidentiality: Availability: COMPLETE
Integrity:  
Availability:  
  
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.secpod.oval:def:201969
oval:org.secpod.oval:def:400052
oval:org.secpod.oval:def:101580
oval:org.mitre.oval:def:6977
...

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