{"id":"USN-8581-1","summary":"libarchive vulnerabilities","details":"It 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)","modified":"2026-07-23T01:29:27.939870945Z","published":"2026-07-21T17:34:42Z","related":["UBUNTU-CVE-2026-14164","UBUNTU-CVE-2026-15028","UBUNTU-CVE-2026-5745"],"upstream":["UBUNTU-CVE-2026-5745","UBUNTU-CVE-2026-14164","UBUNTU-CVE-2026-15028"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8581-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-5745"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-14164"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-15028"}],"affected":[{"package":{"name":"libarchive","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/libarchive?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.0-2ubuntu1.5+esm3"}]}],"versions":["3.4.0-1","3.4.0-1build1","3.4.0-1ubuntu2","3.4.0-2ubuntu1","3.4.0-2ubuntu1.1","3.4.0-2ubuntu1.2","3.4.0-2ubuntu1.3","3.4.0-2ubuntu1.4","3.4.0-2ubuntu1.5","3.4.0-2ubuntu1.5+esm1","3.4.0-2ubuntu1.5+esm2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_version":"3.4.0-2ubuntu1.5+esm3","binary_name":"libarchive-tools"},{"binary_name":"libarchive13","binary_version":"3.4.0-2ubuntu1.5+esm3"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:20.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-5745"},{"id":"CVE-2026-14164","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8581-1.json"}},{"package":{"name":"libarchive","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libarchive?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.0-1ubuntu1.8"}]}],"versions":["3.4.3-2","3.4.3-2build1","3.5.2-1","3.5.2-1ubuntu1","3.6.0-1ubuntu1","3.6.0-1ubuntu1.1","3.6.0-1ubuntu1.2","3.6.0-1ubuntu1.3","3.6.0-1ubuntu1.4","3.6.0-1ubuntu1.5","3.6.0-1ubuntu1.6","3.6.0-1ubuntu1.7"],"ecosystem_specific":{"binaries":[{"binary_name":"libarchive-tools","binary_version":"3.6.0-1ubuntu1.8"},{"binary_name":"libarchive13","binary_version":"3.6.0-1ubuntu1.8"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8581-1.json","cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"id":"CVE-2026-5745","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-14164"}]}}},{"package":{"name":"libarchive","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libarchive?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.2-2ubuntu0.8"}]}],"versions":["3.6.2-1ubuntu1","3.7.2-1ubuntu1","3.7.2-1ubuntu2","3.7.2-1.1ubuntu2","3.7.2-2","3.7.2-2ubuntu0.1","3.7.2-2ubuntu0.2","3.7.2-2ubuntu0.3","3.7.2-2ubuntu0.4","3.7.2-2ubuntu0.5","3.7.2-2ubuntu0.6","3.7.2-2ubuntu0.7"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libarchive-tools","binary_version":"3.7.2-2ubuntu0.8"},{"binary_name":"libarchive13t64","binary_version":"3.7.2-2ubuntu0.8"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:24.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-5745"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-14164"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8581-1.json"}},{"package":{"name":"libarchive","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/libarchive?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8.5-1ubuntu2.2"}]}],"versions":["3.7.7-0ubuntu3","3.8.5-1ubuntu1","3.8.5-1ubuntu2","3.8.5-1ubuntu2.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libarchive-tools","binary_version":"3.8.5-1ubuntu2.2"},{"binary_version":"3.8.5-1ubuntu2.2","binary_name":"libarchive13t64"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:26.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-5745"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-14164"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-15028"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8581-1.json"}}],"schema_version":"1.7.5"}