{"schemaVersion":3,"id":"USN-8643-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"linux, linux-aws, linux-aws-fips, linux-azure, linux-fips, linux-gcp, linux-gcp-6.8, linux-gcp-fips, linux-gkeop, linux-oracle, linux-realtime, linux-realtime-6.8, linux-xilinx 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 drivers;\n  - Open vSwitch;\n  - SCTP protocol;\n(CVE-2026-53224, CVE-2026-53246, CVE-2026-53247, CVE-2026-64531)","dates":{"published":"2026-08-18T18:08:07.000Z","modified":"2026-10-08T12:48:07.283Z","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":"< 6.8.0-138.138","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-138.138","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":"< 6.8.0-1063.66","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-1063.66","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-aws-fips","name":"linux-aws-fips","label":"linux-aws-fips","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-aws-fips","purlType":"deb","versions":[{"text":"< 6.8.0-1063.66+fips1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-1063.66+fips1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-azure","name":"linux-azure","label":"linux-azure","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-azure","purlType":"deb","versions":[{"text":"< 6.8.0-1065.73","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-1065.73","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-fips","name":"linux-fips","label":"linux-fips","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-fips","purlType":"deb","versions":[{"text":"< 6.8.0-138.138+fips1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-138.138+fips1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-gcp","name":"linux-gcp","label":"linux-gcp","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-gcp","purlType":"deb","versions":[{"text":"< 6.8.0-1066.74","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-1066.74","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-gcp-6.8","name":"linux-gcp-6.8","label":"linux-gcp-6.8","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-gcp-6.8","purlType":"deb","versions":[{"text":"< 6.8.0-1066.74~22.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-1066.74~22.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-gcp-fips","name":"linux-gcp-fips","label":"linux-gcp-fips","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-gcp-fips","purlType":"deb","versions":[{"text":"< 6.8.0-1066.74+fips1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-1066.74+fips1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-gkeop","name":"linux-gkeop","label":"linux-gkeop","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-gkeop","purlType":"deb","versions":[{"text":"< 6.8.0-1048.52","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-1048.52","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-oracle","name":"linux-oracle","label":"linux-oracle","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-oracle","purlType":"deb","versions":[{"text":"< 6.8.0-1060.63","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-1060.63","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-realtime","name":"linux-realtime","label":"linux-realtime","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-realtime","purlType":"deb","versions":[{"text":"< 6.8.1-1058.59","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.1-1058.59","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-realtime-6.8","name":"linux-realtime-6.8","label":"linux-realtime-6.8","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-realtime-6.8","purlType":"deb","versions":[{"text":"< 6.8.1-1058.59~22.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.1-1058.59~22.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-xilinx","name":"linux-xilinx","label":"linux-xilinx","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-xilinx","purlType":"deb","versions":[{"text":"< 6.8.0-1035.36","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-1035.36","eol":null,"hubHref":null}],"affectedCount":13,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-8643-1","label":"ubuntu.com/security/notices/USN-8643-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-53224","label":"ubuntu.com/security/CVE-2026-53224","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-53246","label":"ubuntu.com/security/CVE-2026-53246","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-53247","label":"ubuntu.com/security/CVE-2026-53247","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-64531","label":"ubuntu.com/security/CVE-2026-64531","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2026-53224","CVE-2026-53246","CVE-2026-53247","CVE-2026-64531"],"downstream":[],"duplicates":[],"related":["CVE-2026-53224","CVE-2026-53246","CVE-2026-53247","CVE-2026-64531"]},"timeline":[{"kind":"published","date":"2026-08-18T18:08:07.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-08T12:48:07.283Z","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":"2026-10-20T03:44:01.219Z","stale":false,"partial":false}}