{"id":"CVE-2009-4004","aliases":["BELL-CVE-2009-4004","EUVD-2009-3975","GHSA-xc28-j839-8wv2"],"status":"published","title":"Buffer overflow in the kvm_vcpu_ioctl_x86_setup_mce function in arch/x86/kvm/x86.c in the KVM...","description":"Buffer overflow in the kvm_vcpu_ioctl_x86_setup_mce function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel before 2.6.32-rc7 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a KVM_X86_SETUP_MCE IOCTL request that specifies a large number of Machine Check Exception (MCE) banks.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00406,"percentile":0.35175,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119"],"published":"2009-11-20T02:00:00Z","modified":"2026-06-16T23:12:48Z","products":[{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc7","tags":["x_refsource_CONFIRM","x_transferred","Broken Link"]},{"url":"http://www.securityfocus.com/bid/37035","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a9e38c3e01ad242fe2a625354cf065c34b01e3aa","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.vupen.com/english/advisories/2009/3267","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Broken Link"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/54302","tags":["vdb-entry","x_refsource_XF","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://secunia.com/advisories/37357","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Broken Link","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-4004"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a9e38c3e01ad242fe2a625354cf065c34b01e3aa"},{"url":"https://github.com/advisories/GHSA-xc28-j839-8wv2"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2009-4004","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2009-4004","description":"Buffer overflow in the kvm_vcpu_ioctl_x86_setup_mce function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel before 2.6.32-rc7 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a KVM_X86_SETUP_MCE IOCTL request that specifies a large number of Machine Check Exception (MCE) banks.","status":"published","published":"2009-11-20T02:00:00Z","modified":"2024-08-07T06:45:51.065Z","updated_at":"2026-11-02T14:33:24.451733Z"}],"euvd":[{"id":"EUVD-2009-3975","description":"Buffer overflow in the kvm_vcpu_ioctl_x86_setup_mce function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel before 2.6.32-rc7 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a KVM_X86_SETUP_MCE IOCTL request that specifies a large number of Machine Check Exception (MCE) banks.","status":"published","published":"2009-11-20T02:00:00Z","modified":"2024-08-07T06:45:51Z","updated_at":"2026-11-03T01:39:11.734855Z"}],"ghsa":[{"id":"GHSA-xc28-j839-8wv2","title":"Buffer overflow in the kvm_vcpu_ioctl_x86_setup_mce function in arch/x86/kvm/x86.c in the KVM...","description":"Buffer overflow in the kvm_vcpu_ioctl_x86_setup_mce function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel before 2.6.32-rc7 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a KVM_X86_SETUP_MCE IOCTL request that specifies a large number of Machine Check Exception (MCE) banks.","status":"published","published":"2022-05-02T03:50:40Z","modified":"2025-04-09T04:16:30Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T15:01:01.075702Z"}],"nvd":[{"id":"CVE-2009-4004","description":"Buffer overflow in the kvm_vcpu_ioctl_x86_setup_mce function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel before 2.6.32-rc7 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a KVM_X86_SETUP_MCE IOCTL request that specifies a large number of Machine Check Exception (MCE) banks.","status":"published","published":"2009-11-20T02:30:00.67Z","modified":"2026-06-16T23:12:48.373Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:01:37.939838Z"}],"osv":[{"id":"BELL-CVE-2009-4004","title":"CVE-2009-4004 does not affect BellSoft software","status":"withdrawn","published":"2009-11-20T02:30:00Z","modified":"2026-01-26T09:49:44.977706Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:28:12.886815Z"}]}}