{"id":"UBUNTU-CVE-2026-16461","details":"A stack-based buffer overflow was found in rpcbind's rpcinfo utility. In rpcbdump() short mode (used by `rpcinfo -s`), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs `rpcinfo -s` against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.","modified":"2026-07-29T10:18:11.649949805Z","published":"2026-07-21T12:17:00Z","upstream":["CVE-2026-16461"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-16461"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-16461"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502719"}],"affected":[{"package":{"name":"rpcbind","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/rpcbind?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.2.0-8.2ubuntu2","0.2.1-2ubuntu1","0.2.1-2ubuntu2.1","0.2.1-2ubuntu2.2","0.2.1-2ubuntu2.2+esm1","0.2.1-2ubuntu2.2+esm2","0.2.1-2ubuntu2.2+esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"rpcbind","binary_version":"0.2.1-2ubuntu2.2+esm3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16461.json"}},{"package":{"name":"rpcbind","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/rpcbind?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.2.1-6ubuntu4","0.2.3-0.2","0.2.3-0.2ubuntu0.1","0.2.3-0.2ubuntu0.16.04.1","0.2.3-0.2ubuntu0.16.04.1+esm1","0.2.3-0.2ubuntu0.16.04.1+esm2","0.2.3-0.2ubuntu0.16.04.1+esm3"],"ecosystem_specific":{"binaries":[{"binary_version":"0.2.3-0.2ubuntu0.16.04.1+esm3","binary_name":"rpcbind"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16461.json"}},{"package":{"name":"rpcbind","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/rpcbind?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.2.3-0.6","0.2.3-0.6ubuntu0.18.04.1","0.2.3-0.6ubuntu0.18.04.2","0.2.3-0.6ubuntu0.18.04.3","0.2.3-0.6ubuntu0.18.04.4"],"ecosystem_specific":{"binaries":[{"binary_name":"rpcbind","binary_version":"0.2.3-0.6ubuntu0.18.04.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16461.json"}},{"package":{"name":"rpcbind","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/rpcbind?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.5-6","1.2.5-8"],"ecosystem_specific":{"binaries":[{"binary_version":"1.2.5-8","binary_name":"rpcbind"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16461.json"}},{"package":{"name":"rpcbind","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/rpcbind?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.5-9build1","1.2.6-2","1.2.6-2build1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.2.6-2build1","binary_name":"rpcbind"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16461.json"}},{"package":{"name":"rpcbind","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/rpcbind?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.6-6","1.2.6-7","1.2.6-7build1","1.2.6-7ubuntu1","1.2.6-7ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"rpcbind","binary_version":"1.2.6-7ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16461.json"}},{"package":{"name":"rpcbind","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/rpcbind?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.7-1build1","1.2.7-1build2"],"ecosystem_specific":{"binaries":[{"binary_name":"rpcbind","binary_version":"1.2.7-1build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16461.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}