{"schemaVersion":3,"id":"USN-8819-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"linux, linux-hwe, linux-kvm vulnerabilities\n\nSeveral security issues were discovered in the Linux kernel.\nAn attacker could possibly use these to compromise the system.\nThis update corrects flaws in the following subsystems:\n  - Network file system (NFS) server daemon;\n  - IPv6 networking;\n  - Netfilter;\n(CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)","dates":{"published":"2026-09-24T15:02:57.000Z","modified":"2026-09-25T17:57:49.535Z","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":"< 4.15.0-260.272","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.15.0-260.272","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":"< 4.15.0-260.272~16.04.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.15.0-260.272~16.04.2","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":"< 4.15.0-1179.184","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.15.0-1179.184","eol":null,"hubHref":null}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-8819-1","label":"ubuntu.com/security/notices/USN-8819-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-38724","label":"ubuntu.com/security/CVE-2025-38724","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-53131","label":"ubuntu.com/security/CVE-2026-53131","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-53221","label":"ubuntu.com/security/CVE-2026-53221","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2025-38724","CVE-2026-53131","CVE-2026-53221"],"downstream":[],"duplicates":[],"related":["CVE-2025-38724","CVE-2026-53131","CVE-2026-53221"]},"timeline":[{"kind":"published","date":"2026-09-24T15:02:57.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-25T17:57:49.535Z","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":"2026-10-20T18:24:00.965Z","stale":false,"partial":false}}