Vulnerability Details : CVE-2009-4031
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.
Vulnerability category: Input validationDenial of service
Threat overview for CVE-2009-4031
Top countries where our scanners detected CVE-2009-4031
Top open port discovered on systems with this issue
80
IPs affected by CVE-2009-4031 1,081
Threat actors abusing to this issue?
Yes
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affected by CVE-2009-4031!
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Exploit prediction scoring system (EPSS) score for CVE-2009-4031
Probability of exploitation activity in the next 30 days: 0.23%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 60 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2009-4031
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
7.8
|
HIGH | AV:N/AC:L/Au:N/C:N/I:N/A:C |
10.0
|
6.9
|
NIST |
CWE ids for CVE-2009-4031
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The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2009-4031
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https://bugzilla.redhat.com/show_bug.cgi?id=541160
Issue Tracking;Third Party Advisory
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http://git.kernel.org/?p=linux/kernel/git/avi/kvm.git%3Ba=commit%3Bh=e42d9b8141d1f54ff72ad3850bb110c95a5f3b88
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https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11089
Third Party Advisory
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http://www.openwall.com/lists/oss-security/2009/11/25/1
Mailing List;Third Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00006.html
[security-announce] SUSE Security Announcement: Linux kernel (SUSE-SA:20Third Party Advisory
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https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00777.html
Third Party Advisory
-
http://www.securityfocus.com/bid/37130
Third Party Advisory;VDB Entry
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http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.32-rc8-next-20091125.gz
Patch;Vendor Advisory
-
http://www.openwall.com/lists/oss-security/2009/11/25/3
Mailing List;Third Party Advisory
Products affected by CVE-2009-4031
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- 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:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:rc7:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:rc6:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:-:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:rc2:*:*:*:*:*:*