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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "60442DCE-D80D-4512-BAE8-E1C5E54BBBF2", "versionEndIncluding": "5.10.16", "versionStartIncluding": "2.6.39", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*", "matchCriteriaId": "36D96259-24BD-44E2-96D9-78CE1D41F956", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. 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This affects drivers/block/xen-blkback/blkback.c and drivers/xen/xen-scsiback.c."}, {"lang": "es", "value": "Se detect\u00f3 un problema en el kernel de Linux versiones 2.6.39 hasta 5.10.16, como es usado en Xen. Los backends de bloque, red y SCSI consideran determinados errores como un bug simple, causando deliberadamente un bloqueo del kernel. Para los errores que pueden estar al menos bajo la influencia de los invitados (como las condiciones de falta de memoria), no es correcto suponer un bug simple. Sin embargo, las asignaciones de memoria que pueden causar tales bloqueos ocurren solo cuando Linux se ejecuta en modo PV. Esto afecta a los archivos drivers/block/xen-blkback/blkback.c y drivers/xen/xen-scsiback.c"}], "id": "CVE-2021-26931", "lastModified": "2024-11-21T05:57:04.330", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 1.9, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:L/AC:M/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 3.4, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-02-17T02:15:12.987", "references": [{"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": 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