{"schemaVersion":3,"id":"USN-8581-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"libarchive vulnerabilities\n\nIt was discovered that libarchive did not properly manage memory when\nunpacking certain RAR5 archives, leading to a double free. An attacker\ncould possibly use this issue to cause a denial of service.\n(CVE-2026-14164)\n\nIt was discovered that libarchive did not properly validate certain tar\narchives, leading to a buffer overflow. A remote attacker could possibly\nuse this issue to cause a denial of service or execute arbitrary code.\nThis issue only affected Ubuntu 26.04 LTS. (CVE-2026-15028)\n\nIt was discovered that libarchive did not properly validate certain\nmalformed ACL entries. An attacker could possibly use this issue to cause a\ndenial of service. (CVE-2026-5745)","dates":{"published":"2026-07-21T17:34:42.000Z","modified":"2026-07-23T01:29:27.939Z","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":"libarchive","name":"libarchive","label":"libarchive","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/libarchive","purlType":"deb","versions":[{"text":"< 3.4.0-2ubuntu1.5+esm3","noFixRecorded":false,"fixedIn":null},{"text":"< 3.6.0-1ubuntu1.8","noFixRecorded":false,"fixedIn":null},{"text":"< 3.7.2-2ubuntu0.8","noFixRecorded":false,"fixedIn":null},{"text":"< 3.8.5-1ubuntu2.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.4.0-2ubuntu1.5+esm3 | < 3.6.0-1ubuntu1.8 | < 3.7.2-2ubuntu0.8 | < 3.8.5-1ubuntu2.2","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-8581-1","label":"ubuntu.com/security/notices/USN-8581-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-5745","label":"ubuntu.com/security/CVE-2026-5745","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-14164","label":"ubuntu.com/security/CVE-2026-14164","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-15028","label":"ubuntu.com/security/CVE-2026-15028","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CVE-2026-14164","CVE-2026-15028","CVE-2026-5745"]},"timeline":[{"kind":"published","date":"2026-07-21T17:34:42.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-23T01:29:27.939Z","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":"2026-10-19T23:28:02.620Z","stale":false,"partial":false}}