CVE-2009-3640
The update_cr8_intercept function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2009-3640- CVSS 2.0
- 4.9 Medium
AV:L/AC:L/Au:N/C:N/I:N/A:C - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2009-3640- Updated
- 2026-11-02
EUVDEUVD-2009-3615 No score
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.
- Record
EUVD-2009-3615- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-qw65-p7j7-cg58 No score
The update_cr8_intercept function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel...
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.
- Record
GHSA-qw65-p7j7-cg58- Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-3640 is a medium vulnerability (CVSS 4.9) in Linux Kernel, published October 29, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.38%, the 32nd percentile. No source names a fixed version.
References
git.kernel.org?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=88c808fd42b53a7e01a2ac3253ef31fef74cb5af
marc.info?l=oss-security&m=125626965020571&w=2
securityfocus.com/bid/36805
kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc1
exchange.xforce.ibmcloud.com/vulnerabilities/53947
nvd.nist.gov/vuln/detail/CVE-2009-3640
github.com/advisories/GHSA-qw65-p7j7-cg58