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.
Published 2009-11-29 13:07:32
Updated 2023-02-13 02:20:42
Source Red Hat, Inc.
View at NVD,   CVE.org
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
Find out if you* are affected by CVE-2009-4031!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

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

  • 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

Products affected by CVE-2009-4031

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