{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2009-11-25T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "The do_insn_fetch function in arch/x86/kvm/emulate.c in the x86 emulator in the KVM subsystem in the Linux kernel before 2.6.32-rc8-next-20091125 tries to interpret instructions that contain too many bytes to be valid, which allows guest OS users to cause a denial of service (increased scheduling latency) on the host OS via unspecified manipulations related to SMP support."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2017-09-18T12:57:01.000Z", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"name": "[oss-security] 20091125 Re: CVE request: kernel: KVM: x86 emulator: limit instructions to 15 bytes", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2009/11/25/1"}, {"name": "37720", "tags": ["third-party-advisory", "x_refsource_SECUNIA"], "url": "http://secunia.com/advisories/37720"}, {"name": "SUSE-SA:2010:018", "tags": ["vendor-advisory", "x_refsource_SUSE"], "url": "http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00006.html"}, {"tags": ["x_refsource_CONFIRM"], "url": "http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.32-rc8-next-20091125.gz"}, {"name": "oval:org.mitre.oval:def:11089", "tags": ["vdb-entry", "signature", "x_refsource_OVAL"], "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11089"}, {"name": "[oss-security] 20091125 CVE request: kernel: KVM: x86 emulator: limit instructions to 15 bytes", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2009/11/25/3"}, {"name": "FEDORA-2009-13098", "tags": ["vendor-advisory", "x_refsource_FEDORA"], "url": "https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00777.html"}, {"tags": ["x_refsource_CONFIRM"], "url": "http://git.kernel.org/?p=linux/kernel/git/avi/kvm.git%3Ba=commit%3Bh=e42d9b8141d1f54ff72ad3850bb110c95a5f3b88"}, {"name": "37130", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/37130"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=541160"}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-07T06:45:50.938Z"}, "title": "CVE Program Container", "references": [{"name": "[oss-security] 20091125 Re: CVE request: kernel: KVM: x86 emulator: limit instructions to 15 bytes", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2009/11/25/1"}, {"name": "37720", "tags": ["third-party-advisory", "x_refsource_SECUNIA", "x_transferred"], "url": "http://secunia.com/advisories/37720"}, {"name": "SUSE-SA:2010:018", "tags": ["vendor-advisory", "x_refsource_SUSE", "x_transferred"], "url": "http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00006.html"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.32-rc8-next-20091125.gz"}, {"name": "oval:org.mitre.oval:def:11089", "tags": ["vdb-entry", "signature", "x_refsource_OVAL", "x_transferred"], "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11089"}, {"name": "[oss-security] 20091125 CVE request: kernel: KVM: x86 emulator: limit instructions to 15 bytes", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2009/11/25/3"}, {"name": "FEDORA-2009-13098", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00777.html"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "http://git.kernel.org/?p=linux/kernel/git/avi/kvm.git%3Ba=commit%3Bh=e42d9b8141d1f54ff72ad3850bb110c95a5f3b88"}, {"name": "37130", "tags": ["vdb-entry", "x_refsource_BID", "x_transferred"], "url": "http://www.securityfocus.com/bid/37130"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=541160"}]}]}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2009-4031", "datePublished": "2009-11-27T19:00:00.000Z", "dateReserved": "2009-11-20T00:00:00.000Z", "dateUpdated": "2024-08-07T06:45:50.938Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "76B13D5A-329B-4D9B-BFA3-C0DB166F4E18", "versionEndExcluding": "2.6.32", "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", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.32:rc7:*:*:*:*:*:*", "matchCriteriaId": "DBE3083A-0FA6-4854-8F65-05E8364B3A9B", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The do_insn_fetch function in arch/x86/kvm/emulate.c in the x86 emulator in the KVM subsystem in the Linux kernel before 2.6.32-rc8-next-20091125 tries to interpret instructions that contain too many bytes to be valid, which allows guest OS users to cause a denial of service (increased scheduling latency) on the host OS via unspecified manipulations related to SMP support."}, {"lang": "es", "value": "La funci\u00f3n do_insn_fetch en arch/x86/kvm/emulate.c en el emulador x86 KVM en el subsystem del kernel de Linux anterior a 2.6.32-rc8-next-20091125 intenta interpretar instrucciones que contienen demasiados bytes para ser v\u00e1lidas, lo que permite a un usuario invitado del sistema operativo provocar una denegaci\u00f3n de servicio (incremento de la latencia de la planificaci\u00f3n) en el sistema operativo anfitri\u00f3n a trav\u00e9s de manipulaciones no especificadas relacionadas con el soporte SMP."}], "id": "CVE-2009-4031", "lastModified": "2026-04-23T00:35:47.467", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.8, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2009-11-29T13:07:32.250", "references": [{"source": "secalert@redhat.com", "url": "http://git.kernel.org/?p=linux/kernel/git/avi/kvm.git%3Ba=commit%3Bh=e42d9b8141d1f54ff72ad3850bb110c95a5f3b88"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00006.html"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "http://secunia.com/advisories/37720"}, {"source": "secalert@redhat.com", "tags": ["Patch", "Vendor Advisory"], "url": "http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.32-rc8-next-20091125.gz"}, {"source": "secalert@redhat.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2009/11/25/1"}, {"source": "secalert@redhat.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2009/11/25/3"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/37130"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=541160"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11089"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00777.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://git.kernel.org/?p=linux/kernel/git/avi/kvm.git%3Ba=commit%3Bh=e42d9b8141d1f54ff72ad3850bb110c95a5f3b88"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00006.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "http://secunia.com/advisories/37720"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.32-rc8-next-20091125.gz"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2009/11/25/1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2009/11/25/3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/37130"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=541160"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11089"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00777.html"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2009:1659", "cpe": "cpe:/a:redhat:rhel_virtualization:5", "package": "kvm-0:83-105.el5_4.13", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2009-12-09T00:00:00Z"}, {"advisory": "RHSA-2009:1692", "cpe": "cpe:/o:redhat:enterprise_linux:5::hypervisor", "package": "rhev-hypervisor-0:5.4-2.1.3.el5_4rhev2_1", "product_name": "Red Hat Enterprise Virtualization for RHEL-5", "release_date": "2009-12-23T00:00:00Z"}], "bugzilla": {"description": "kernel: KVM: x86 emulator: limit instructions to 15 bytes", "id": "541160", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=541160"}, "csaw": false, "cvss": {"cvss_base_score": "2.1", "cvss_scoring_vector": "AV:L/AC:L/Au:N/C:N/I:N/A:P", "status": "verified"}, "details": ["The do_insn_fetch function in arch/x86/kvm/emulate.c in the x86 emulator in the KVM subsystem in the Linux kernel before 2.6.32-rc8-next-20091125 tries to interpret instructions that contain too many bytes to be valid, which allows guest OS users to cause a denial of service (increased scheduling latency) on the host OS via unspecified manipulations related to SMP support."], "name": "CVE-2009-4031", "public_date": "2009-11-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2009-4031\nhttps://nvd.nist.gov/vuln/detail/CVE-2009-4031"], "threat_severity": "Moderate"}

{}