{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-19T19:18:59.489","vulnerabilities":[{"cve":{"id":"CVE-2021-20239","sourceIdentifier":"secalert@redhat.com","published":"2021-05-28T11:15:08.003","lastModified":"2024-11-21T05:46:11.713","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A flaw was found in the Linux kernel in versions before 5.4.92 in the BPF protocol. This flaw allows an attacker with a local account to leak information about kernel internal addresses. The highest threat from this vulnerability is to confidentiality."},{"lang":"es","value":"Se encontró un fallo en el kernel de Linux en versiones anteriores a 5.4.92 en el protocolo BPF.&#xa0;Este fallo permite a un atacante con una cuenta local filtrar información sobre las direcciones internas del kernel.&#xa0;La mayor amenaza de esta vulnerabilidad es la confidencialidad"}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","baseScore":3.3,"baseSeverity":"LOW","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":1.8,"impactScore":1.4}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:P/I:N/A:N","baseScore":2.1,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE"},"baseSeverity":"LOW","exploitabilityScore":3.9,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"secalert@redhat.com","type":"Secondary","description":[{"lang":"en","value":"CWE-822"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-119"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.4.92","matchCriteriaId":"6B130008-5C96-49EE-9BC8-E954F395A514"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*","matchCriteriaId":"1D8B549B-E57B-4DFE-8A13-CAB06B5356B3"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*","matchCriteriaId":"2F6AB192-9D7D-4A9A-8995-E53A9DE9EAFC"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*","matchCriteriaId":"F4CFF558-3C47-480D-A2F0-BABF26042943"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*","matchCriteriaId":"E460AA51-FCDA-46B9-AE97-E6676AA5E194"}]}]}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1923636","source":"secalert@redhat.com","tags":["Issue Tracking","Third Party Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1923636","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Third Party Advisory"]}]}}]}