{"schemaVersion":3,"id":"USN-3901-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"linux, linux-aws, linux-gcp, linux-kvm, linux-oem, linux-oracle, linux-raspi2 vulnerabilities\n\nJann Horn discovered that the userfaultd implementation in the Linux kernel\ndid not properly restrict access to certain ioctls. A local attacker could\nuse this possibly to modify files. (CVE-2018-18397)\n\nIt was discovered that the crypto subsystem of the Linux kernel leaked\nuninitialized memory to user space in some situations. A local attacker\ncould use this to expose sensitive information (kernel memory).\n(CVE-2018-19854)\n\nJann Horn discovered a race condition in the fork() system call in\nthe Linux kernel. A local attacker could use this to gain access to\nservices that cache authorizations. (CVE-2019-6133)","dates":{"published":"2019-03-05T20:44:55.000Z","modified":"2026-04-22T09:55:14.868Z","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","name":"linux","label":"linux","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux","purlType":"deb","versions":[{"text":"< 4.15.0-46.49","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.15.0-46.49","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-aws","name":"linux-aws","label":"linux-aws","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-aws","purlType":"deb","versions":[{"text":"< 4.15.0-1033.35","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.15.0-1033.35","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-gcp","name":"linux-gcp","label":"linux-gcp","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-gcp","purlType":"deb","versions":[{"text":"< 4.15.0-1028.29","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.15.0-1028.29","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-kvm","name":"linux-kvm","label":"linux-kvm","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-kvm","purlType":"deb","versions":[{"text":"< 4.15.0-1030.30","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.15.0-1030.30","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-oem","name":"linux-oem","label":"linux-oem","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-oem","purlType":"deb","versions":[{"text":"< 4.15.0-1034.39","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.15.0-1034.39","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-oracle","name":"linux-oracle","label":"linux-oracle","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-oracle","purlType":"deb","versions":[{"text":"< 4.15.0-1009.11","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.15.0-1009.11","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-raspi2","name":"linux-raspi2","label":"linux-raspi2","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-raspi2","purlType":"deb","versions":[{"text":"< 4.15.0-1032.34","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.15.0-1032.34","eol":null,"hubHref":null}],"affectedCount":7,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-3901-1","label":"ubuntu.com/security/notices/USN-3901-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-18397","label":"ubuntu.com/security/CVE-2018-18397","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-19854","label":"ubuntu.com/security/CVE-2018-19854","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2019-6133","label":"ubuntu.com/security/CVE-2019-6133","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2018-18397","CVE-2018-19854","CVE-2019-6133"],"downstream":[],"duplicates":[],"related":["CVE-2018-18397","CVE-2018-19854","CVE-2019-6133"]},"timeline":[{"kind":"published","date":"2019-03-05T20:44:55.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-22T09:55:14.868Z","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":"2026-10-20T04:59:37.007Z","stale":false,"partial":false}}