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La función qemuMonitorUnregister() en qemuProcessHandleMonitorEOF es llamada usando múltiples hilos sin estar adecuadamente protegida por un bloqueo de monitor. Este fallo podría ser activado por la API virConnectGetAllDomainStats cuando el huésped está siendo apagado. Un cliente no privilegiado con una conexión de sólo lectura podría usar este fallo para llevar a cabo un ataque de denegación de servicio causando el bloqueo del demonio libvirt."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":3.6}]},"weaknesses":[{"source":"secalert@redhat.com","type":"Secondary","description":[{"lang":"en","value":"CWE-416"}]},{"source":"nvd@nist.gov","type":"Secondary","description":[{"lang":"en","value":"CWE-416"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.0","matchCriteriaId":"248F6876-51F6-4A2B-999C-FDEE82D40689"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:*","matchCriteriaId":"AAE4D2D0-CEEB-416F-8BC5-A7987DF56190"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*","matchCriteriaId":"80E516C0-98A4-4ADE-B69F-66A772E2BAAA"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*","matchCriteriaId":"F4CFF558-3C47-480D-A2F0-BABF26042943"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*","matchCriteriaId":"6C3741B8-851F-475D-B428-523F4F722350"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*","matchCriteriaId":"87C21FE1-EA5C-498F-9C6C-D05F91A88217"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:*:*:*:*:*:*:*","matchCriteriaId":"9EF5C4AC-CA69-41E3-AD93-7AC21931374A"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*","matchCriteriaId":"47811209-5CE5-4375-8391-B0A7F6A0E420"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:*","matchCriteriaId":"729C515E-1DD3-466D-A50B-AFE058FFC94A"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:*","matchCriteriaId":"871A5C26-DB7B-4870-A5B2-5DD24C90B4A7"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:*","matchCriteriaId":"1272DF03-7674-4BD4-8E64-94004B195448"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:redhat:codeready_linux_builder:-:*:*:*:*:*:*:*","matchCriteriaId":"1CD81C46-328B-412D-AF4E-68A2AD2F1A73"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*","matchCriteriaId":"F4CFF558-3C47-480D-A2F0-BABF26042943"},{"vulnerable":false,"criteria":"cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*","matchCriteriaId":"6C3741B8-851F-475D-B428-523F4F722350"},{"vulnerable":false,"criteria":"cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*","matchCriteriaId":"87C21FE1-EA5C-498F-9C6C-D05F91A88217"},{"vulnerable":false,"criteria":"cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:*:*:*:*:*:*:*","matchCriteriaId":"9EF5C4AC-CA69-41E3-AD93-7AC21931374A"},{"vulnerable":false,"criteria":"cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*","matchCriteriaId":"47811209-5CE5-4375-8391-B0A7F6A0E420"},{"vulnerable":false,"criteria":"cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:*","matchCriteriaId":"729C515E-1DD3-466D-A50B-AFE058FFC94A"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*","matchCriteriaId":"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73"},{"vulnerable":true,"criteria":"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*","matchCriteriaId":"FA6FEEC2-9F11-4643-8827-749718254FED"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*","matchCriteriaId":"E7CF3019-975D-40BB-A8A4-894E62BD3797"}]}]}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2021-3975","source":"secalert@redhat.com","tags":["Issue 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