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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6FF9F960-C2EA-4018-94CE-8D893CA8A7F9", "versionEndIncluding": "3.3.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "The KVM implementation in the Linux kernel before 3.3.4 does not properly manage the relationships between memory slots and the iommu, which allows guest OS users to cause a denial of service (memory leak and host OS crash) by leveraging administrative access to the guest OS to conduct hotunplug and hotplug operations on devices."}, {"lang": "es", "value": "La implementaci\u00f3n de KVM en el kernel de Linux en versiones anteriores a la v3.3.4 no gestiona correctamente la relaci\u00f3n entre las ranuras de memoria y el IOMMU, lo que permite causar una denegaci\u00f3n de servicio (ca\u00edda del sistema host) a los usuarios de sistemas operativos virtuales que funcionen bajo esa plataforma , aprovechandose del acceso de administraci\u00f3n a un sistema operativo invitado para llevar a cabo operaciones 'hotunplug' y 'hotplug' en los dispositivos."}], "id": "CVE-2012-2121", "lastModified": "2024-11-21T01:38:32.440", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 4.9, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2012-05-17T11:00:38.210", "references": [{"source": "secalert@redhat.com", "url": "http://rhn.redhat.com/errata/RHSA-2012-0676.html"}, {"source": "secalert@redhat.com", "url": "http://rhn.redhat.com/errata/RHSA-2012-0743.html"}, {"source": "secalert@redhat.com", "url": "http://secunia.com/advisories/50732"}, {"source": "secalert@redhat.com", "url": "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.4"}, {"source": "secalert@redhat.com", "url": "http://www.openwall.com/lists/oss-security/2012/04/19/16"}, {"source": "secalert@redhat.com", "url": "http://www.securitytracker.com/id?1027083"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-1577-1"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-2036-1"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-2037-1"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=814149"}, {"source": "secalert@redhat.com", "url": "https://github.com/torvalds/linux/commit/09ca8e1173bcb12e2a449698c9ae3b86a8a10195"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://rhn.redhat.com/errata/RHSA-2012-0676.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://rhn.redhat.com/errata/RHSA-2012-0743.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://secunia.com/advisories/50732"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2012/04/19/16"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securitytracker.com/id?1027083"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.ubuntu.com/usn/USN-1577-1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.ubuntu.com/usn/USN-2036-1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.ubuntu.com/usn/USN-2037-1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=814149"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/torvalds/linux/commit/09ca8e1173bcb12e2a449698c9ae3b86a8a10195"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-264"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2012:0676", "cpe": "cpe:/a:redhat:rhel_virtualization:5", "package": "kvm-0:83-249.el5_8.4", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2012-05-21T00:00:00Z"}, {"advisory": "RHSA-2012:0743", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "kernel-0:2.6.32-220.23.1.el6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2012-06-18T00:00:00Z"}], "bugzilla": {"description": "kvm: device assignment page leak", "id": "814149", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=814149"}, "csaw": false, "cvss": {"cvss_base_score": "4.7", "cvss_scoring_vector": "AV:L/AC:M/Au:N/C:N/I:N/A:C", "status": "verified"}, "details": ["The KVM implementation in the Linux kernel before 3.3.4 does not properly manage the relationships between memory slots and the iommu, which allows guest OS users to cause a denial of service (memory leak and host OS crash) by leveraging administrative access to the guest OS to conduct hotunplug and hotplug operations on devices."], "name": "CVE-2012-2121", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Affected", "package_name": "kvm", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:rhel_eus:6.2", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux Extended Update Support 6.2"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "realtime-kernel", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2012-03-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2012-2121\nhttps://nvd.nist.gov/vuln/detail/CVE-2012-2121"], "threat_severity": "Moderate"}