{"schemaVersion":3,"id":"USN-3540-2","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"linux-lts-xenial, linux-aws vulnerabilities\n\nUSN-3540-1 addressed vulnerabilities in the Linux kernel for Ubuntu\n16.04 LTS. This update provides the corresponding updates for the\nLinux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for\nUbuntu 14.04 LTS.\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-3522-2 mitigated CVE-2017-5754 (Meltdown) for the amd64\narchitecture in the Linux Hardware Enablement (HWE) kernel from Ubuntu\n16.04 LTS for Ubuntu 14.04 LTS. This update provides the corresponding\nmitigations for the ppc64el architecture. Original advisory 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":"2018-01-23T00:42:49.000Z","modified":"2026-05-29T18:00:32.010Z","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":"< 4.4.0-1011.11","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.4.0-1011.11","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-lts-xenial","name":"linux-lts-xenial","label":"linux-lts-xenial","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-lts-xenial","purlType":"deb","versions":[{"text":"< 4.4.0-111.134~14.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.4.0-111.134~14.04.1","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-3540-2","label":"ubuntu.com/security/notices/USN-3540-2","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":"2018-01-23T00:42:49.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-05-29T18:00:32.010Z","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":"2026-10-19T18:46:50.952Z","stale":false,"partial":false}}