{"schemaVersion":3,"id":"USN-5391-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"libsepol vulnerabilities\n\nNicolas Iooss discovered that libsepol incorrectly handled memory\nwhen handling policies. An attacker could possibly use this issue\nto cause a crash, resulting in a denial of service, or possibly\nexecute arbitrary code. (CVE-2021-36084)\n\nIt was discovered that libsepol incorrectly handled memory when\nhandling policies. An attacker could possibly use this issue to cause\na crash, resulting in a denial of service, or possibly execute\narbitrary code. (CVE-2021-36085)\n\nIt was discovered that libsepol incorrectly handled memory when\nhandling policies. An attacker could possibly use this issue to cause\na crash, resulting in a denial of service, or possibly execute\narbitrary code. This issue only affects Ubuntu 18.04 LTS,\nUbuntu 20.04 LTS and Ubuntu 21.10. (CVE-2021-36086)\n\nIt was discovered that libsepol incorrectly validated certain data,\nleading to a heap overflow. An attacker could possibly use this issue\nto cause a crash, resulting in a denial of service, or possibly execute\narbitrary code. (CVE-2021-36087)","dates":{"published":"2022-04-27T09:32:18.000Z","modified":"2026-06-25T13:31:08.963Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"libsepol","name":"libsepol","label":"libsepol","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/libsepol","purlType":"deb","versions":[{"text":"< 2.4-2ubuntu0.1~esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 2.7-1ubuntu0.1","noFixRecorded":false,"fixedIn":null},{"text":"< 3.0-1ubuntu0.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.4-2ubuntu0.1~esm1 | < 2.7-1ubuntu0.1 | < 3.0-1ubuntu0.1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-5391-1","label":"ubuntu.com/security/notices/USN-5391-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-36084","label":"ubuntu.com/security/CVE-2021-36084","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-36085","label":"ubuntu.com/security/CVE-2021-36085","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-36086","label":"ubuntu.com/security/CVE-2021-36086","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-36087","label":"ubuntu.com/security/CVE-2021-36087","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2021-36084","CVE-2021-36085","CVE-2021-36086","CVE-2021-36087"],"downstream":[],"duplicates":[],"related":["CVE-2021-36084","CVE-2021-36085","CVE-2021-36086","CVE-2021-36087"]},"timeline":[{"kind":"published","date":"2022-04-27T09:32:18.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-25T13:31:08.963Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T23:31:52.431Z","stale":false,"partial":false}}