{"schemaVersion":3,"id":"USN-5155-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"bluez vulnerabilities\n\nIt was discovered that BlueZ incorrectly handled the Discoverable status\nwhen a device is powered down. This could result in devices being powered\nup discoverable, contrary to expectations. This issue only affected Ubuntu\n20.04 LTS, Ubuntu 21.04, and Ubuntu 21.10. (CVE-2021-3658)\n\nIt was discovered that BlueZ incorrectly handled certain memory operations.\nA remote attacker could possibly use this issue to cause BlueZ to consume\nresources, leading to a denial of service. (CVE-2021-41229)\n\nIt was discovered that the BlueZ gatt server incorrectly handled\ndisconnects. A remote attacker could possibly use this issue to cause\nBlueZ to crash, leading to a denial of service. (CVE-2021-43400)","dates":{"published":"2021-11-23T19:04:05.000Z","modified":"2026-04-27T16:03:37.085Z","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":"bluez","name":"bluez","label":"bluez","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/bluez","purlType":"deb","versions":[{"text":"< 5.48-0ubuntu3.6","noFixRecorded":false,"fixedIn":null},{"text":"< 5.53-0ubuntu3.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.48-0ubuntu3.6 | < 5.53-0ubuntu3.4","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-5155-1","label":"ubuntu.com/security/notices/USN-5155-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-3658","label":"ubuntu.com/security/CVE-2021-3658","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-41229","label":"ubuntu.com/security/CVE-2021-41229","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-43400","label":"ubuntu.com/security/CVE-2021-43400","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2021-3658","CVE-2021-41229","CVE-2021-43400"],"downstream":[],"duplicates":[],"related":["CVE-2021-3658","CVE-2021-41229","CVE-2021-43400"]},"timeline":[{"kind":"published","date":"2021-11-23T19:04:05.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-27T16:03:37.085Z","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":"2026-10-20T04:24:36.841Z","stale":false,"partial":false}}