{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2011-12-14T00:00:00", "descriptions": [{"lang": "en", "value": "The create_pit_timer function in arch/x86/kvm/i8254.c in KVM 83, and possibly other versions, does not properly handle when Programmable Interval Timer (PIT) interrupt requests (IRQs) when a virtual interrupt controller (irqchip) is not available, which allows local users to cause a denial of service (NULL pointer dereference) by starting a timer."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2017-12-28T20:57:01", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"name": "RHSA-2012:0051", "tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "http://www.redhat.com/support/errata/RHSA-2012-0051.html"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=769721"}, {"name": "51172", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/51172"}, {"name": "[oss-security] 20111221 Re: kernel: kvm: pit timer with no irqchip crashes the system", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2011/12/21/7"}, {"name": "[kvm] 20111214 [PATCH 1/2] KVM: x86: Prevent starting PIT timers in the absence of irqchip support", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/83564"}, {"name": "SUSE-SU-2012:0616", "tags": ["vendor-advisory", "x_refsource_SUSE"], "url": "http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html"}, {"name": "openSUSE-SU-2013:0925", "tags": ["vendor-advisory", "x_refsource_SUSE"], "url": "http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html"}, {"name": "1026559", "tags": ["vdb-entry", "x_refsource_SECTRACK"], "url": "http://www.securitytracker.com/id?1026559"}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-07T00:09:19.494Z"}, "title": "CVE Program Container", "references": [{"name": "RHSA-2012:0051", "tags": ["vendor-advisory", "x_refsource_REDHAT", "x_transferred"], "url": "http://www.redhat.com/support/errata/RHSA-2012-0051.html"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=769721"}, {"name": "51172", "tags": ["vdb-entry", "x_refsource_BID", "x_transferred"], "url": "http://www.securityfocus.com/bid/51172"}, {"name": "[oss-security] 20111221 Re: kernel: kvm: pit timer with no irqchip crashes the system", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2011/12/21/7"}, {"name": "[kvm] 20111214 [PATCH 1/2] KVM: x86: Prevent starting PIT timers in the absence of irqchip support", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/83564"}, {"name": "SUSE-SU-2012:0616", "tags": ["vendor-advisory", "x_refsource_SUSE", "x_transferred"], "url": "http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html"}, {"name": "openSUSE-SU-2013:0925", "tags": ["vendor-advisory", "x_refsource_SUSE", "x_transferred"], "url": "http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html"}, {"name": "1026559", "tags": ["vdb-entry", "x_refsource_SECTRACK", "x_transferred"], "url": "http://www.securitytracker.com/id?1026559"}]}]}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2011-4622", "datePublished": "2012-01-27T15:00:00", "dateReserved": "2011-11-29T00:00:00", "dateUpdated": "2024-08-07T00:09:19.494Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:redhat:kvm:83:*:*:*:*:*:*:*", "matchCriteriaId": "C9998FC2-8189-4269-BEF5-2044933ACB30", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The create_pit_timer function in arch/x86/kvm/i8254.c in KVM 83, and possibly other versions, does not properly handle when Programmable Interval Timer (PIT) interrupt requests (IRQs) when a virtual interrupt controller (irqchip) is not available, which allows local users to cause a denial of service (NULL pointer dereference) by starting a timer."}, {"lang": "es", "value": "La funci\u00f3n create_pit_timer en arch/x86/kvm/i8254.c en KVM v83, y posiblemente otras versiones, no controla correctamente las solicitudes de interrupci\u00f3n (IRQs) en el temporizador de intervalos programable (PIT), cuando no hay disponible un controlador de interrupciones virtual (irqchip), lo que permite a usuarios locales causar una denegaci\u00f3n de servicio (desreferencia a puntero a NULL) mediante la iniciaci\u00f3n de un temporizador."}], "id": "CVE-2011-4622", "lastModified": "2025-04-11T00:51:21.963", "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": "2012-01-27T15:55:04.687", "references": [{"source": "secalert@redhat.com", "url": "http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html"}, {"source": "secalert@redhat.com", "url": "http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/83564"}, {"source": "secalert@redhat.com", "url": "http://www.openwall.com/lists/oss-security/2011/12/21/7"}, {"source": "secalert@redhat.com", "url": "http://www.redhat.com/support/errata/RHSA-2012-0051.html"}, {"source": "secalert@redhat.com", "url": "http://www.securityfocus.com/bid/51172"}, {"source": "secalert@redhat.com", "url": "http://www.securitytracker.com/id?1026559"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=769721"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/83564"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2011/12/21/7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.redhat.com/support/errata/RHSA-2012-0051.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/51172"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securitytracker.com/id?1026559"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=769721"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2012:0051", "cpe": "cpe:/a:redhat:rhel_virtualization:5", "package": "kvm-0:83-239.el5_7.1", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2012-01-23T00:00:00Z"}, {"advisory": "RHSA-2012:0350", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "kernel-0:2.6.32-220.7.1.el6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2012-03-06T00:00:00Z"}], "bugzilla": {"description": "kernel: kvm: pit timer with no irqchip crashes the system", "id": "769721", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=769721"}, "csaw": false, "cvss": {"cvss_base_score": "4.9", "cvss_scoring_vector": "AV:L/AC:L/Au:N/C:N/I:N/A:C", "status": "verified"}, "details": ["The create_pit_timer function in arch/x86/kvm/i8254.c in KVM 83, and possibly other versions, does not properly handle when Programmable Interval Timer (PIT) interrupt requests (IRQs) when a virtual interrupt controller (irqchip) is not available, which allows local users to cause a denial of service (NULL pointer dereference) by starting a timer."], "name": "CVE-2011-4622", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Affected", "package_name": "kvm", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "realtime-kernel", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2011-12-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2011-4622\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-4622"], "statement": "This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 4 and Red Hat Enterprise MRG as they did not provide support for the KVM subsystem. It has been addressed in Red Hat Enterprise 5 and 6 via https://rhn.redhat.com/errata/RHSA-2012-0051.html and https://rhn.redhat.com/errata/RHSA-2012-0350.html.", "threat_severity": "Moderate"}