{"schemaVersion":3,"id":"USN-5086-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"linux, linux-hwe, linux-hwe-5.11, linux-hwe-5.4 vulnerability\n\nJohan Almbladh discovered that the eBPF JIT implementation for IBM\ns390x systems in the Linux kernel miscompiled operations in some\nsituations, allowing circumvention of the BPF verifier. A local\nattacker could use this to cause a denial of service (system crash)\nor possibly execute arbitrary code.","dates":{"published":"2021-09-22T14:09:41.000Z","modified":"2026-06-25T13:30:47.226Z","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":"< 4.4.0-216.249","noFixRecorded":false,"fixedIn":null},{"text":"< 4.15.0-158.166","noFixRecorded":false,"fixedIn":null},{"text":"< 5.4.0-86.97","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.4.0-216.249 | < 4.15.0-158.166 | < 5.4.0-86.97","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":"< 4.15.0-158.166~16.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.15.0-158.166~16.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-hwe-5.11","name":"linux-hwe-5.11","label":"linux-hwe-5.11","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-hwe-5.11","purlType":"deb","versions":[{"text":"< 5.11.0-36.40~20.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.11.0-36.40~20.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-hwe-5.4","name":"linux-hwe-5.4","label":"linux-hwe-5.4","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-hwe-5.4","purlType":"deb","versions":[{"text":"< 5.4.0-86.97~18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-86.97~18.04.1","eol":null,"hubHref":null}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-5086-1","label":"ubuntu.com/security/notices/USN-5086-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://launchpad.net/bugs/1943960","label":"launchpad.net/bugs/1943960","hostname":"launchpad.net","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-09-22T14:09:41.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-25T13:30:47.226Z","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":"2026-10-21T06:34:54.257Z","stale":false,"partial":false}}