{"id":"UBUNTU-CVE-2026-57918","details":"libnfs through 6.0.2 before 935b8db has an xid integer underflow in READ_IOVEC in rpc_read_from_socket in lib/socket.c during a connection to a crafted NFS server, when the expected pdu size exceeds the absolute pdu size from the xid/record-marker.","modified":"2026-06-30T22:52:02.400898497Z","published":"2026-06-26T11:16:00Z","withdrawn":"2026-06-30T20:45:48Z","upstream":["CVE-2026-57918"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-57918"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-57918"},{"type":"REPORT","url":"https://github.com/sahlberg/libnfs/commit/935b8db712b3c6649bc57ddc276526c4a31680de"}],"affected":[{"package":{"name":"libnfs","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libnfs?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9.7-2","1.9.8-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.9.8-1","binary_name":"libnfs8"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57918.json"}},{"package":{"name":"libnfs","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libnfs?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.11.0-2","1.11.0-3","2.0.0-1~exp1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.0.0-1~exp1","binary_name":"libnfs11"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57918.json"}},{"package":{"name":"libnfs","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libnfs?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.0-2ubuntu1","4.0.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libnfs-utils","binary_version":"4.0.0-1"},{"binary_version":"4.0.0-1","binary_name":"libnfs13"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57918.json"}},{"package":{"name":"libnfs","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libnfs?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.0-1","4.0.0-1build1","4.0.0-1build2","4.0.0-1ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libnfs-utils","binary_version":"4.0.0-1ubuntu0.1"},{"binary_version":"4.0.0-1ubuntu0.1","binary_name":"libnfs13"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57918.json"}},{"package":{"name":"libnfs","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libnfs?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.0-1build2","5.0.2-1","5.0.2-1build1","5.0.2-1ubuntu0.24.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libnfs-utils","binary_version":"5.0.2-1ubuntu0.24.04.1"},{"binary_name":"libnfs14","binary_version":"5.0.2-1ubuntu0.24.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57918.json"}},{"package":{"name":"libnfs","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/libnfs?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.0.2-1build1","5.0.2-1ubuntu0.25.10.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libnfs-utils","binary_version":"5.0.2-1ubuntu0.25.10.1"},{"binary_name":"libnfs14","binary_version":"5.0.2-1ubuntu0.25.10.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57918.json"}},{"package":{"name":"libnfs","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/libnfs?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.0.2-1build1","5.0.2-1build2","5.0.2-1ubuntu1","5.0.2-1ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_version":"5.0.2-1ubuntu1.1","binary_name":"libnfs-utils"},{"binary_name":"libnfs14","binary_version":"5.0.2-1ubuntu1.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57918.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L"},{"type":"Ubuntu","score":"medium"}]}