{"id":"CVE-2009-3640","aliases":["EUVD-2009-3615","GHSA-qw65-p7j7-cg58"],"status":"published","title":"The update_cr8_intercept function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel...","description":"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.","severity":{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00382,"percentile":0.32445,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2009-10-29T14:00:00Z","modified":"2026-06-16T23:12:04Z","products":[{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=88c808fd42b53a7e01a2ac3253ef31fef74cb5af","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://marc.info/?l=oss-security\u0026m=125626965020571\u0026w=2","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"http://marc.info/?l=oss-security\u0026m=125640417219385\u0026w=2","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"http://www.securityfocus.com/bid/36805","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc1","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/53947","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-3640"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=88c808fd42b53a7e01a2ac3253ef31fef74cb5af"},{"url":"https://github.com/advisories/GHSA-qw65-p7j7-cg58"}],"sources":{"cve":[{"id":"CVE-2009-3640","description":"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.","status":"published","published":"2009-10-29T14:00:00Z","modified":"2024-08-07T06:38:29.815Z","updated_at":"2026-11-02T14:33:24.10565Z"}],"euvd":[{"id":"EUVD-2009-3615","description":"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.","status":"published","published":"2009-10-29T14:00:00Z","modified":"2024-08-07T06:38:29Z","updated_at":"2026-11-03T01:39:13.262818Z"}],"ghsa":[{"id":"GHSA-qw65-p7j7-cg58","title":"The update_cr8_intercept function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel...","description":"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.","status":"published","published":"2022-05-02T03:47:13Z","modified":"2023-02-13T03:30:31Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:54:05.992759Z"}],"nvd":[{"id":"CVE-2009-3640","description":"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.","status":"published","published":"2009-10-29T14:30:01.25Z","modified":"2026-06-16T23:12:04.56Z","cvss":[{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:01:37.004244Z"}]}}