{"schemaVersion":3,"id":"USN-4465-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"linux-hwe, linux-aws-5.3, linux-azure-5.3, linux-gke-5.3  vulnerabilities\n\nIt was discovered that the XFS file system implementation in the Linux\nkernel did not properly validate meta data in some circumstances. An\nattacker could use this to construct a malicious XFS image that, when\nmounted, could cause a denial of service. (CVE-2020-12655)\n\nIt was discovered that the bcache subsystem in the Linux kernel did not\nproperly release a lock in some error conditions. A local attacker could\npossibly use this to cause a denial of service. (CVE-2020-12771)\n\nKyungtae Kim discovered that the USB testing driver in the Linux kernel did\nnot properly deallocate memory on disconnect events. A physically proximate\nattacker could use this to cause a denial of service (memory exhaustion).\n(CVE-2020-15393)","dates":{"published":"2020-08-23T04:11:48.000Z","modified":"2026-06-03T13:33:40.958Z","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":"linux-aws-5.3","name":"linux-aws-5.3","label":"linux-aws-5.3","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-aws-5.3","purlType":"deb","versions":[{"text":"< 5.3.0-1033.35","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.3.0-1033.35","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-azure-5.3","name":"linux-azure-5.3","label":"linux-azure-5.3","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-azure-5.3","purlType":"deb","versions":[{"text":"< 5.3.0-1035.36","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.3.0-1035.36","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-gke-5.3","name":"linux-gke-5.3","label":"linux-gke-5.3","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-gke-5.3","purlType":"deb","versions":[{"text":"< 5.3.0-1033.35","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.3.0-1033.35","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-hwe","name":"linux-hwe","label":"linux-hwe","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-hwe","purlType":"deb","versions":[{"text":"< 5.3.0-65.59","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.3.0-65.59","eol":null,"hubHref":null}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-4465-1","label":"ubuntu.com/security/notices/USN-4465-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-12655","label":"ubuntu.com/security/CVE-2020-12655","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-12771","label":"ubuntu.com/security/CVE-2020-12771","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-15393","label":"ubuntu.com/security/CVE-2020-15393","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-24394","label":"ubuntu.com/security/CVE-2020-24394","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2020-12655","CVE-2020-12771","CVE-2020-15393","CVE-2020-24394"],"downstream":[],"duplicates":[],"related":["CVE-2020-12655","CVE-2020-12771","CVE-2020-15393","CVE-2020-24394"]},"timeline":[{"kind":"published","date":"2020-08-23T04:11:48.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-03T13:33:40.958Z","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":"2026-10-20T03:35:47.261Z","stale":false,"partial":false}}