{"schemaVersion":3,"id":"USN-3540-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"linux, linux-aws, linux-euclid vulnerabilities\n\nJann Horn discovered that microprocessors utilizing speculative\nexecution and branch prediction may allow unauthorized memory\nreads via sidechannel attacks. This flaw is known as Spectre. A\nlocal attacker could use this to expose sensitive information,\nincluding kernel memory. This update provides mitigations for the\ni386 (CVE-2017-5753 only), amd64, ppc64el, and s390x architectures.\n(CVE-2017-5715, CVE-2017-5753)\n\nUSN-3522-1 mitigated CVE-2017-5754 (Meltdown) for the amd64\narchitecture in Ubuntu 16.04 LTS. This update provides the\ncorresponding mitigations for the ppc64el architecture. Original\nadvisory details:\n\n Jann Horn discovered that microprocessors utilizing speculative\n execution and indirect branch prediction may allow unauthorized memory\n reads via sidechannel attacks. This flaw is known as Meltdown. A local\n attacker could use this to expose sensitive information, including\n kernel memory. (CVE-2017-5754)","dates":{"published":"2018-01-23T00:26:16.000Z","modified":"2026-05-29T18:00:31.391Z","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":"< 4.4.0-112.135","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.4.0-112.135","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":"< 4.4.0-1049.58","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.4.0-1049.58","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-euclid","name":"linux-euclid","label":"linux-euclid","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-euclid","purlType":"deb","versions":[{"text":"< 4.4.0-9023.24","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.4.0-9023.24","eol":null,"hubHref":null}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-3540-1","label":"ubuntu.com/security/notices/USN-3540-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2017-5715","label":"ubuntu.com/security/CVE-2017-5715","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2017-5753","label":"ubuntu.com/security/CVE-2017-5753","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2017-5754","label":"ubuntu.com/security/CVE-2017-5754","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2017-5715","CVE-2017-5753","CVE-2017-5754"],"downstream":[],"duplicates":[],"related":["CVE-2017-5715","CVE-2017-5753","CVE-2017-5754"]},"timeline":[{"kind":"published","date":"2018-01-23T00:26:16.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-05-29T18:00:31.391Z","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":"2026-10-19T22:48:49.295Z","stale":false,"partial":false}}