{"id":"USN-8705-1","summary":"zfs-linux vulnerability","details":"It was discovered that OpenZFS incorrectly handled authorization checks for\ncertain ioctl operations on Linux. A local attacker could possibly use this\nissue to perform pool-administrative operations or access privileged\ninformation, resulting in an authorization bypass.","modified":"2026-08-31T22:26:24.369666173Z","published":"2026-08-31T12:57:46Z","related":["UBUNTU-CVE-2026-79619"],"upstream":["CVE-2026-79619","UBUNTU-CVE-2026-79619"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8705-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-79619"}],"affected":[{"package":{"name":"zfs-linux","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/zfs-linux?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.5-1ubuntu6~22.04.7"}]}],"versions":["2.0.6-1ubuntu2","2.0.6-1ubuntu3","2.1.2-1ubuntu1","2.1.2-1ubuntu2","2.1.2-1ubuntu3","2.1.4-0ubuntu0.1","2.1.5-1ubuntu6~22.04.1","2.1.5-1ubuntu6~22.04.2","2.1.5-1ubuntu6~22.04.3","2.1.5-1ubuntu6~22.04.4","2.1.5-1ubuntu6~22.04.5","2.1.5-1ubuntu6~22.04.6"],"ecosystem_specific":{"binaries":[{"binary_version":"2.1.5-1ubuntu6~22.04.7","binary_name":"libnvpair3linux"},{"binary_version":"2.1.5-1ubuntu6~22.04.7","binary_name":"libpam-zfs"},{"binary_name":"libuutil3linux","binary_version":"2.1.5-1ubuntu6~22.04.7"},{"binary_name":"libzfs4linux","binary_version":"2.1.5-1ubuntu6~22.04.7"},{"binary_name":"libzfsbootenv1linux","binary_version":"2.1.5-1ubuntu6~22.04.7"},{"binary_name":"libzpool5linux","binary_version":"2.1.5-1ubuntu6~22.04.7"},{"binary_version":"2.1.5-1ubuntu6~22.04.7","binary_name":"python3-pyzfs"},{"binary_version":"2.1.5-1ubuntu6~22.04.7","binary_name":"zfs-dkms"},{"binary_name":"zfs-dracut","binary_version":"2.1.5-1ubuntu6~22.04.7"},{"binary_version":"2.1.5-1ubuntu6~22.04.7","binary_name":"zfs-initramfs"},{"binary_name":"zfs-test","binary_version":"2.1.5-1ubuntu6~22.04.7"},{"binary_name":"zfs-zed","binary_version":"2.1.5-1ubuntu6~22.04.7"},{"binary_name":"zfsutils-linux","binary_version":"2.1.5-1ubuntu6~22.04.7"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"id":"CVE-2026-79619","severity":[{"score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"type":"Ubuntu","score":"high"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8705-1.json"}},{"package":{"name":"zfs-linux","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/zfs-linux?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.2-0ubuntu9.5"}]}],"versions":["2.2.0~rc3-0ubuntu4","2.2.0-0ubuntu1","2.2.0-0ubuntu3","2.2.1-0ubuntu1","2.2.2-0ubuntu1","2.2.2-0ubuntu2","2.2.2-0ubuntu3","2.2.2-0ubuntu4","2.2.2-0ubuntu7","2.2.2-0ubuntu8","2.2.2-0ubuntu9","2.2.2-0ubuntu9.1","2.2.2-0ubuntu9.2","2.2.2-0ubuntu9.3","2.2.2-0ubuntu9.4"],"ecosystem_specific":{"binaries":[{"binary_version":"2.2.2-0ubuntu9.5","binary_name":"libnvpair3linux"},{"binary_name":"libpam-zfs","binary_version":"2.2.2-0ubuntu9.5"},{"binary_name":"libuutil3linux","binary_version":"2.2.2-0ubuntu9.5"},{"binary_name":"libzfs4linux","binary_version":"2.2.2-0ubuntu9.5"},{"binary_name":"libzfsbootenv1linux","binary_version":"2.2.2-0ubuntu9.5"},{"binary_name":"libzpool5linux","binary_version":"2.2.2-0ubuntu9.5"},{"binary_version":"2.2.2-0ubuntu9.5","binary_name":"python3-pyzfs"},{"binary_name":"zfs-dkms","binary_version":"2.2.2-0ubuntu9.5"},{"binary_version":"2.2.2-0ubuntu9.5","binary_name":"zfs-dracut"},{"binary_name":"zfs-initramfs","binary_version":"2.2.2-0ubuntu9.5"},{"binary_version":"2.2.2-0ubuntu9.5","binary_name":"zfs-test"},{"binary_name":"zfs-zed","binary_version":"2.2.2-0ubuntu9.5"},{"binary_version":"2.2.2-0ubuntu9.5","binary_name":"zfsutils-linux"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:24.04:LTS","cves":[{"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2026-79619"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8705-1.json"}},{"package":{"name":"zfs-linux","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/zfs-linux?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.1-1ubuntu5.1"}]}],"versions":["2.3.4-1ubuntu2","2.3.5-1ubuntu1","2.3.5-1ubuntu2","2.4.0-1ubuntu2","2.4.0-1ubuntu3","2.4.0-1ubuntu4","2.4.1-1ubuntu1","2.4.1-1ubuntu2","2.4.1-1ubuntu3","2.4.1-1ubuntu4","2.4.1-1ubuntu5"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libnvpair3linux","binary_version":"2.4.1-1ubuntu5.1"},{"binary_name":"libpam-zfs","binary_version":"2.4.1-1ubuntu5.1"},{"binary_name":"libuutil3linux","binary_version":"2.4.1-1ubuntu5.1"},{"binary_name":"libzfs7linux","binary_version":"2.4.1-1ubuntu5.1"},{"binary_version":"2.4.1-1ubuntu5.1","binary_name":"libzfsbootenv1linux"},{"binary_name":"libzpool7linux","binary_version":"2.4.1-1ubuntu5.1"},{"binary_version":"2.4.1-1ubuntu5.1","binary_name":"python3-pyzfs"},{"binary_name":"zfs-dkms","binary_version":"2.4.1-1ubuntu5.1"},{"binary_name":"zfs-dracut","binary_version":"2.4.1-1ubuntu5.1"},{"binary_version":"2.4.1-1ubuntu5.1","binary_name":"zfs-initramfs"},{"binary_name":"zfs-test","binary_version":"2.4.1-1ubuntu5.1"},{"binary_name":"zfs-zed","binary_version":"2.4.1-1ubuntu5.1"},{"binary_version":"2.4.1-1ubuntu5.1","binary_name":"zfsutils-linux"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:26.04:LTS","cves":[{"id":"CVE-2026-79619","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"high"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8705-1.json"}}],"schema_version":"1.9.0"}