{"schemaVersion":3,"id":"USN-3833-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"linux-aws vulnerabilities\n\nJann Horn discovered that the Linux kernel mishandles mapping UID or GID\nranges inside nested user namespaces in some situations. A local attacker\ncould use this to bypass access controls on resources outside the\nnamespace. (CVE-2018-18955)\n\nPhilipp Wendler discovered that the overlayfs implementation in the Linux\nkernel did not properly verify the directory contents permissions from\nwithin a unprivileged user namespace. A local attacker could use this to\nexpose sensitive information (protected file names). (CVE-2018-6559)","dates":{"published":"2018-11-30T06:31:39.000Z","modified":"2026-02-10T04:41:27.000Z","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","name":"linux-aws","label":"linux-aws","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-aws","purlType":"deb","versions":[{"text":"< 4.15.0-1029.30","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.15.0-1029.30","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-3833-1","label":"ubuntu.com/security/notices/USN-3833-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-6559","label":"ubuntu.com/security/CVE-2018-6559","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-18955","label":"ubuntu.com/security/CVE-2018-18955","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2018-18955","CVE-2018-6559"],"downstream":[],"duplicates":[],"related":["CVE-2018-18955","CVE-2018-6559"]},"timeline":[{"kind":"published","date":"2018-11-30T06:31:39.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-02-10T04:41:27.000Z","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":"2026-10-19T22:20:46.989Z","stale":false,"partial":false}}