{"schemaVersion":3,"id":"USN-5486-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"intel-microcode vulnerabilities\n\nIt was discovered that some Intel processors did not implement sufficient\ncontrol flow management. A local attacker could use this to cause a denial\nof service. (CVE-2021-0127)\n\nJoseph Nuzman discovered that some Intel processors did not properly\ninitialise shared resources. A local attacker could use this to obtain\nsensitive information. (CVE-2021-0145)\n\nMark Ermolov, Dmitry Sklyarov and Maxim Goryachy discovered that some Intel\nprocessors did not prevent test and debug logic from being activated at\nruntime. A local attacker could use this to escalate\nprivileges. (CVE-2021-0146)\n\nIt was discovered that some Intel processors did not properly restrict\naccess in some situations. A local attacker could use this to obtain\nsensitive information. (CVE-2021-33117)\n\nBrandon Miller discovered that some Intel processors did not properly\nrestrict access in some situations. A local attacker could use this to\nobtain sensitive information or a remote attacker could use this to cause a\ndenial of service. (CVE-2021-33120)\n\nIt was discovered that some Intel processors did not completely perform\ncleanup actions on multi-core shared buffers. A local attacker could\npossibly use this to expose sensitive information. (CVE-2022-21123,\nCVE-2022-21127)\n\nAlysa Milburn, Jason Brandt, Avishai Redelman and Nir Lavi discovered that\nsome Intel processors improperly optimised security-critical code. A local\nattacker could possibly use this to expose sensitive\ninformation. (CVE-2022-21151)\n\nIt was discovered that some Intel processors did not properly perform\ncleanup during specific special register write operations. A local attacker\ncould possibly use this to expose sensitive information. (CVE-2022-21166)","dates":{"published":"2022-06-20T04:21:50.000Z","modified":"2026-09-14T11:17:26.573Z","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":"intel-microcode","name":"intel-microcode","label":"intel-microcode","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/intel-microcode","purlType":"deb","versions":[{"text":"< 3.20220510.0ubuntu0.18.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 3.20220510.0ubuntu0.20.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 3.20220510.0ubuntu0.22.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.20220510.0ubuntu0.18.04.1 | < 3.20220510.0ubuntu0.20.04.1 | < 3.20220510.0ubuntu0.22.04.1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-5486-1","label":"ubuntu.com/security/notices/USN-5486-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-0127","label":"ubuntu.com/security/CVE-2021-0127","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-0145","label":"ubuntu.com/security/CVE-2021-0145","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-0146","label":"ubuntu.com/security/CVE-2021-0146","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-33117","label":"ubuntu.com/security/CVE-2021-33117","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-33120","label":"ubuntu.com/security/CVE-2021-33120","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2022-21123","label":"ubuntu.com/security/CVE-2022-21123","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2022-21127","label":"ubuntu.com/security/CVE-2022-21127","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2022-21151","label":"ubuntu.com/security/CVE-2022-21151","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2022-21166","label":"ubuntu.com/security/CVE-2022-21166","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2021-0127","CVE-2021-0145","CVE-2021-0146","CVE-2021-33117","CVE-2021-33120","CVE-2022-21123","CVE-2022-21127","CVE-2022-21151","CVE-2022-21166"],"downstream":[],"duplicates":[],"related":["CVE-2021-0127","CVE-2021-0145","CVE-2021-0146","CVE-2021-33117","CVE-2021-33120","CVE-2022-21123","CVE-2022-21127","CVE-2022-21151","CVE-2022-21166"]},"timeline":[{"kind":"published","date":"2022-06-20T04:21:50.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-14T11:17:26.573Z","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":"2026-10-19T14:00:30.349Z","stale":false,"partial":false}}