{"schemaVersion":3,"id":"USN-8392-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"linux-aws-5.4, linux-hwe-5.4 vulnerabilities\n\n\nIt was discovered that the Linux kernel algif_aead module did not properly\nhandle in-place cryptographic operations. This flaw is known as Copy Fail.\nA local attacker could use this to escalate privileges, or possibly escape\na container. (CVE-2026-31431)\n\nIt was discovered that the Linux kernel did not properly handle shared page\nfragments during socket buffer operations, collectively known as Dirty\nFrag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the\nRxRPC networking subsystem when processing paged fragments. A local\nattacker could use this to escalate privileges, or possibly escape a\ncontainer. (CVE-2026-43284, CVE-2026-43500)\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  - Cryptographic API;\n  - Packet sockets;\n  - RDS protocol;\n  - TLS protocol;\n(CVE-2026-31504, CVE-2026-31533, CVE-2026-43033, CVE-2026-43077,\nCVE-2026-43078, CVE-2026-43494, CVE-2026-46028)","dates":{"published":"2026-06-04T21:28:50.000Z","modified":"2026-07-06T20:30:40.801Z","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-5.4","name":"linux-aws-5.4","label":"linux-aws-5.4","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-aws-5.4","purlType":"deb","versions":[{"text":"< 5.4.0-1160.170~18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1160.170~18.04.1","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":"< 5.4.0-231.251~18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-231.251~18.04.1","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-8392-1","label":"ubuntu.com/security/notices/USN-8392-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-31431","label":"ubuntu.com/security/CVE-2026-31431","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-31504","label":"ubuntu.com/security/CVE-2026-31504","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-31533","label":"ubuntu.com/security/CVE-2026-31533","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-43033","label":"ubuntu.com/security/CVE-2026-43033","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-43077","label":"ubuntu.com/security/CVE-2026-43077","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-43078","label":"ubuntu.com/security/CVE-2026-43078","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-43284","label":"ubuntu.com/security/CVE-2026-43284","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-43494","label":"ubuntu.com/security/CVE-2026-43494","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-43500","label":"ubuntu.com/security/CVE-2026-43500","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-46028","label":"ubuntu.com/security/CVE-2026-46028","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CVE-2026-31431","CVE-2026-31504","CVE-2026-31533","CVE-2026-43033","CVE-2026-43077","CVE-2026-43078","CVE-2026-43284","CVE-2026-43494","CVE-2026-43500","CVE-2026-46028"]},"timeline":[{"kind":"published","date":"2026-06-04T21:28:50.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-06T20:30:40.801Z","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":"2026-10-20T06:51:27.336Z","stale":false,"partial":false}}