Vulnerability Details : CVE-2009-3640

The update_cr8_intercept function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel before 2.6.32-rc1 does not properly handle the absence of an Advanced Programmable Interrupt Controller (APIC), which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly gain privileges via a call to the kvm_vcpu_ioctl function.
Published 2009-10-29 14:30:01
Updated 2025-04-09 00:30:58
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: Memory CorruptionDenial of service

Products affected by CVE-2009-3640

Threat overview for CVE-2009-3640

Top countries where our scanners detected CVE-2009-3640
Top open port discovered on systems with this issue 52869
IPs affected by CVE-2009-3640 235,060
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2009-3640!
*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-2009-3640

EPSS FAQ
0.06%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 16 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2009-3640

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.9
 MEDIUM AV:L/AC:L/Au:N/C:N/I:N/A:C
3.9
6.9
 NIST

CWE ids for CVE-2009-3640

  • 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)

Vendor statements for CVE-2009-3640

  • Red Hat 2009-10-30
    Not vulnerable. This issue did not affect the versions of KVM as shipped with Red Hat Enterprise Linux 5 as it does not contain the patch that introduced this vulnerability (upstream commit f0a3602c).

References for CVE-2009-3640

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