{"affected":[{"affectedData":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"source":"cve@mitre.org"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*","matchCriteriaId":"E0060574-66EE-413D-9C6B-197AF1164EC9","versionStartIncluding":"4.10.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"In Xen 4.10, new infrastructure was introduced as part of an overhaul to how MSR emulation happens for guests. Unfortunately, one tracking structure isn't freed when a vcpu is destroyed. This allows guest OS administrators to cause a denial of service (host OS memory consumption) by rebooting many times."},{"lang":"es","value":"En Xen 4.10, se introdujo una nueva infraestructura como parte de una revisión de cómo ocurre la emulación MSR para los invitados. Desafortunadamente, no se libera una estructura de rastreo cuando se destruye una vcpu. Esto permite que administradores invitados del sistema operativo provoquen una denegación de servicio (consumo de memoria del sistema operativo del host) reiniciando muchas veces."}],"id":"CVE-2018-5244","lastModified":"2026-06-17T01:59:54.410","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}],"cvssMetricV30":[{"cvssData":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","version":"3.0"},"exploitabilityScore":2.0,"impactScore":4.0,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2018-01-05T18:29:00.247","references":[{"source":"cve@mitre.org","tags":["Third Party Advisory","VDB Entry"],"url":"http://www.securityfocus.com/bid/102433"},{"source":"cve@mitre.org","url":"http://www.securitytracker.com/id/1040774"},{"source":"cve@mitre.org","url":"https://security.gentoo.org/glsa/201810-06"},{"source":"cve@mitre.org","tags":["Issue Tracking","Mitigation","Vendor Advisory"],"url":"https://xenbits.xen.org/xsa/advisory-253.html"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","VDB Entry"],"url":"http://www.securityfocus.com/bid/102433"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"http://www.securitytracker.com/id/1040774"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://security.gentoo.org/glsa/201810-06"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Mitigation","Vendor Advisory"],"url":"https://xenbits.xen.org/xsa/advisory-253.html"}],"sourceIdentifier":"cve@mitre.org","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-119"}],"source":"nvd@nist.gov","type":"Primary"}]}