{"api_version":"1","generated_at":"2026-07-23T12:25:46+00:00","cve":"CVE-2009-4004","urls":{"html":"https://cve.report/CVE-2009-4004","api":"https://cve.report/api/cve/CVE-2009-4004.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2009-4004","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2009-4004"},"summary":{"title":"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.","state":"PUBLISHED","assigner":"mitre","published_at":"2009-11-20 02:30:00","updated_at":"2026-04-23 00:35:47"},"problem_types":["CWE-119","n/a"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"2.0","source":"nvd@nist.gov","type":"Primary","score":"7.2","severity":"","vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","data":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:C/I:C/A:C","baseScore":7.2,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE"}}],"references":[{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a9e38c3e01ad242fe2a625354cf065c34b01e3aa","name":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a9e38c3e01ad242fe2a625354cf065c34b01e3aa","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"","mime":"text/html","httpstatus":"404","archivestatus":"404"},{"url":"http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc7","name":"http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc7","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Broken Link"],"title":"404: File not found","mime":"text/plain","httpstatus":"404","archivestatus":"200"},{"url":"http://www.vupen.com/english/advisories/2009/3267","name":"http://www.vupen.com/english/advisories/2009/3267","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Broken Link"],"title":"Webmail : Solution de messagerie professionnelle - OVHcloud- OVH","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/54302","name":"https://exchange.xforce.ibmcloud.com/vulnerabilities/54302","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","VDB Entry"],"title":"IBM X-Force Exchange","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://secunia.com/advisories/37357","name":"http://secunia.com/advisories/37357","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Broken Link","Vendor Advisory"],"title":"Linux Kernel Multiple Vulnerabilities - Secunia Advisories - Vulnerability Information - Secunia.com","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.securityfocus.com/bid/37035","name":"http://www.securityfocus.com/bid/37035","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","VDB Entry"],"title":"Linux Kernel KVM 'KVM_MAX_MCE_BANKS' Memory Corruption Vulnerability","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a9e38c3e01ad242fe2a625354cf065c34b01e3aa","name":"CONFIRM:http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a9e38c3e01ad242fe2a625354cf065c34b01e3aa","refsource":"MITRE","tags":[],"title":"kernel/git/torvalds/linux.git - Linux kernel source tree","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2009-4004","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-4004","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"n/a","product":"n/a","version":"affected n/a","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2009","cve_id":"4004","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"2.6.32","cpe7":"-","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2009","cve_id":"4004","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"2.6.32","cpe7":"rc1","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2009","cve_id":"4004","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"2.6.32","cpe7":"rc2","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2009","cve_id":"4004","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"2.6.32","cpe7":"rc3","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2009","cve_id":"4004","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"2.6.32","cpe7":"rc4","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2009","cve_id":"4004","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"2.6.32","cpe7":"rc5","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2009","cve_id":"4004","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"2.6.32","cpe7":"rc6","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2009","cve_id":"4004","vulnerable":"1","versionEndIncluding":"2.6.31.14","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[{"cvename":"CVE-2009-4004","organization":"Red Hat","lastmodified":"2009-11-20","contributor":"Tomas Hoger","statementText":"Not vulnerable. This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 3, 4, and Red Hat Enterprise MRG as KVM (Kernel-based Virtual Machine) is only supported in Red Hat Enterprise Linux 5. Red Hat Enterprise Linux 5 is not vulnerable to this issue because it does not include the change that introduced this buffer overflow vulnerability.","cve_year":"2009","cve_id":"4004","crc32":"fc0e28aa"}],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2024-08-07T06:45:51.065Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc7"},{"name":"37035","tags":["vdb-entry","x_refsource_BID","x_transferred"],"url":"http://www.securityfocus.com/bid/37035"},{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a9e38c3e01ad242fe2a625354cf065c34b01e3aa"},{"name":"ADV-2009-3267","tags":["vdb-entry","x_refsource_VUPEN","x_transferred"],"url":"http://www.vupen.com/english/advisories/2009/3267"},{"name":"kernel-kvmvcpuioctl-privilege-escalation(54302)","tags":["vdb-entry","x_refsource_XF","x_transferred"],"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/54302"},{"name":"37357","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"],"url":"http://secunia.com/advisories/37357"}],"title":"CVE Program Container"}],"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"datePublic":"2009-11-12T00:00:00.000Z","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2017-08-16T14:57:01.000Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre"},"references":[{"tags":["x_refsource_CONFIRM"],"url":"http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc7"},{"name":"37035","tags":["vdb-entry","x_refsource_BID"],"url":"http://www.securityfocus.com/bid/37035"},{"tags":["x_refsource_CONFIRM"],"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a9e38c3e01ad242fe2a625354cf065c34b01e3aa"},{"name":"ADV-2009-3267","tags":["vdb-entry","x_refsource_VUPEN"],"url":"http://www.vupen.com/english/advisories/2009/3267"},{"name":"kernel-kvmvcpuioctl-privilege-escalation(54302)","tags":["vdb-entry","x_refsource_XF"],"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/54302"},{"name":"37357","tags":["third-party-advisory","x_refsource_SECUNIA"],"url":"http://secunia.com/advisories/37357"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2009-4004","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"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."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc7","refsource":"CONFIRM","url":"http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc7"},{"name":"37035","refsource":"BID","url":"http://www.securityfocus.com/bid/37035"},{"name":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a9e38c3e01ad242fe2a625354cf065c34b01e3aa","refsource":"CONFIRM","url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a9e38c3e01ad242fe2a625354cf065c34b01e3aa"},{"name":"ADV-2009-3267","refsource":"VUPEN","url":"http://www.vupen.com/english/advisories/2009/3267"},{"name":"kernel-kvmvcpuioctl-privilege-escalation(54302)","refsource":"XF","url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/54302"},{"name":"37357","refsource":"SECUNIA","url":"http://secunia.com/advisories/37357"}]}}}},"cveMetadata":{"assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","cveId":"CVE-2009-4004","datePublished":"2009-11-20T02:00:00.000Z","dateReserved":"2009-11-19T00:00:00.000Z","dateUpdated":"2024-08-07T06:45:51.065Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"},"nvd":{"publishedDate":"2009-11-20 02:30:00","lastModifiedDate":"2026-04-23 00:35:47","problem_types":["CWE-119","n/a"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:C/I:C/A:C","baseScore":7.2,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE"},"baseSeverity":"HIGH","exploitabilityScore":3.9,"impactScore":10,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndIncluding":"2.6.31.14","matchCriteriaId":"BEC4349F-7F67-435F-8909-94648A0E8F90"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:2.6.32:-:*:*:*:*:*:*","matchCriteriaId":"37B2E2B1-3E39-4DBA-817D-08F34D9F6E53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:2.6.32:rc1:*:*:*:*:*:*","matchCriteriaId":"C85D4E0A-14DA-4884-AF6F-A0F54304430F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:2.6.32:rc2:*:*:*:*:*:*","matchCriteriaId":"1C8471AA-44D7-4D19-82B6-C4B999C65F97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:2.6.32:rc3:*:*:*:*:*:*","matchCriteriaId":"218DE1D1-3843-4076-9AE4-70AA0FD99B3E"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:2.6.32:rc4:*:*:*:*:*:*","matchCriteriaId":"2677114B-AF05-42EB-BBC8-FA85CD631C21"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:2.6.32:rc5:*:*:*:*:*:*","matchCriteriaId":"FA8D64E1-A700-4D9E-9063-EC3CFC1A6D98"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:2.6.32:rc6:*:*:*:*:*:*","matchCriteriaId":"1B6C0A59-556F-4579-9AD2-4ABAE01FE2CF"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2009","CveId":"4004","Ordinal":"1","Title":"CVE-2009-4004","CVE":"CVE-2009-4004","Year":"2009"},"notes":[{"CveYear":"2009","CveId":"4004","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"CVE-2009-4004"},{"CveYear":"2009","CveId":"4004","Ordinal":"2","NoteData":"2009-11-19","Type":"Other","Title":"Published"},{"CveYear":"2009","CveId":"4004","Ordinal":"3","NoteData":"2017-08-16","Type":"Other","Title":"Modified"}]}}}