{"id":"USN-8464-1","summary":"libnfs vulnerability","details":"It was discovered that LIBNFS incorrectly handled certain string sizes when\nconnecting to an NFS server. An attacker could use this issue to cause\nLIBNFS to crash, resulting in a denial of service, or possibly execute\narbitrary code.","modified":"2026-06-23T22:14:21.910357100Z","published":"2026-06-23T14:57:53Z","related":["UBUNTU-CVE-2026-53689"],"upstream":["CVE-2026-53689","UBUNTU-CVE-2026-53689"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8464-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53689"}],"affected":[{"package":{"name":"libnfs","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libnfs?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.0-1ubuntu0.1"}]}],"versions":["4.0.0-1","4.0.0-1build1","4.0.0-1build2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"4.0.0-1ubuntu0.1","binary_name":"libnfs-utils"},{"binary_name":"libnfs13","binary_version":"4.0.0-1ubuntu0.1"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2026-53689","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:22.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8464-1.json"}},{"package":{"name":"libnfs","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libnfs?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.0.2-1ubuntu0.24.04.1"}]}],"versions":["4.0.0-1build2","5.0.2-1","5.0.2-1build1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libnfs-utils","binary_version":"5.0.2-1ubuntu0.24.04.1"},{"binary_version":"5.0.2-1ubuntu0.24.04.1","binary_name":"libnfs14"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:24.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-53689"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8464-1.json"}},{"package":{"name":"libnfs","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/libnfs?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.0.2-1ubuntu0.25.10.1"}]}],"versions":["5.0.2-1build1"],"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"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:25.10","cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-53689"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8464-1.json"}},{"package":{"name":"libnfs","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/libnfs?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.0.2-1ubuntu1.1"}]}],"versions":["5.0.2-1build1","5.0.2-1build2","5.0.2-1ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"5.0.2-1ubuntu1.1","binary_name":"libnfs-utils"},{"binary_name":"libnfs14","binary_version":"5.0.2-1ubuntu1.1"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:26.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-53689"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8464-1.json"}}],"schema_version":"1.7.5"}