{"id":"UBUNTU-CVE-2026-3608","details":"Sending a maliciously crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons over any configured API socket or HA listener can cause the receiving daemon to exit with a stack overflow error. This issue affects Kea versions 2.6.0 through 2.6.4 and 3.0.0 through 3.0.2.","modified":"2026-06-30T18:17:59.203220128Z","published":"2026-03-25T00:00:00Z","related":["USN-8403-1"],"upstream":["CVE-2026-3608"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-3608"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-3608"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8403-1"}],"affected":[{"package":{"name":"isc-kea","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/isc-kea?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0-1","1.0.0-1build1","1.0.0-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"kea-admin","binary_version":"1.0.0-1ubuntu0.1~esm1"},{"binary_version":"1.0.0-1ubuntu0.1~esm1","binary_name":"kea-common"},{"binary_name":"kea-dhcp-ddns-server","binary_version":"1.0.0-1ubuntu0.1~esm1"},{"binary_name":"kea-dhcp4-server","binary_version":"1.0.0-1ubuntu0.1~esm1"},{"binary_name":"kea-dhcp6-server","binary_version":"1.0.0-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3608.json"}},{"package":{"name":"isc-kea","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/isc-kea?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.0-1","1.1.0-1build1","1.1.0-1build2","1.1.0-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"kea-admin","binary_version":"1.1.0-1ubuntu0.1~esm1"},{"binary_version":"1.1.0-1ubuntu0.1~esm1","binary_name":"kea-common"},{"binary_version":"1.1.0-1ubuntu0.1~esm1","binary_name":"kea-dhcp-ddns-server"},{"binary_name":"kea-dhcp4-server","binary_version":"1.1.0-1ubuntu0.1~esm1"},{"binary_name":"kea-dhcp6-server","binary_version":"1.1.0-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3608.json"}},{"package":{"name":"isc-kea","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/isc-kea?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.0-2ubuntu1","1.5.0-2ubuntu2","1.5.0-2ubuntu3","1.6.1-0ubuntu1","1.6.1-0ubuntu2","1.6.2-0ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"kea-admin","binary_version":"1.6.2-0ubuntu1"},{"binary_version":"1.6.2-0ubuntu1","binary_name":"kea-common"},{"binary_name":"kea-ctrl-agent","binary_version":"1.6.2-0ubuntu1"},{"binary_version":"1.6.2-0ubuntu1","binary_name":"kea-dhcp-ddns-server"},{"binary_version":"1.6.2-0ubuntu1","binary_name":"kea-dhcp4-server"},{"binary_name":"kea-dhcp6-server","binary_version":"1.6.2-0ubuntu1"},{"binary_name":"python3-kea-connector","binary_version":"1.6.2-0ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3608.json"}},{"package":{"name":"isc-kea","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/isc-kea?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.0-0ubuntu1","2.0.1-2","2.0.2-1","2.0.2-1ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"kea","binary_version":"2.0.2-1ubuntu0.1"},{"binary_name":"kea-admin","binary_version":"2.0.2-1ubuntu0.1"},{"binary_name":"kea-common","binary_version":"2.0.2-1ubuntu0.1"},{"binary_version":"2.0.2-1ubuntu0.1","binary_name":"kea-ctrl-agent"},{"binary_name":"kea-dhcp-ddns-server","binary_version":"2.0.2-1ubuntu0.1"},{"binary_version":"2.0.2-1ubuntu0.1","binary_name":"kea-dhcp4-server"},{"binary_version":"2.0.2-1ubuntu0.1","binary_name":"kea-dhcp6-server"},{"binary_name":"python3-kea-connector","binary_version":"2.0.2-1ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3608.json"}},{"package":{"name":"isc-kea","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/isc-kea?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.1-3ubuntu0.2"}]}],"versions":["2.2.1-3","2.4.0-1","2.4.1-1","2.4.1-2build1","2.4.1-3build1","2.4.1-3build3","2.4.1-3build3.1","2.4.1-3ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"kea","binary_version":"2.4.1-3ubuntu0.2"},{"binary_name":"kea-admin","binary_version":"2.4.1-3ubuntu0.2"},{"binary_version":"2.4.1-3ubuntu0.2","binary_name":"kea-common"},{"binary_name":"kea-ctrl-agent","binary_version":"2.4.1-3ubuntu0.2"},{"binary_version":"2.4.1-3ubuntu0.2","binary_name":"kea-dhcp-ddns-server"},{"binary_version":"2.4.1-3ubuntu0.2","binary_name":"kea-dhcp4-server"},{"binary_version":"2.4.1-3ubuntu0.2","binary_name":"kea-dhcp6-server"},{"binary_name":"python3-kea-connector","binary_version":"2.4.1-3ubuntu0.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3608.json"}},{"package":{"name":"isc-kea","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/isc-kea?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.3-2ubuntu0.1"}]}],"versions":["2.6.1-1","2.6.1-2","2.6.3-1","2.6.3-2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"2.6.3-2ubuntu0.1","binary_name":"kea"},{"binary_version":"2.6.3-2ubuntu0.1","binary_name":"kea-admin"},{"binary_version":"2.6.3-2ubuntu0.1","binary_name":"kea-common"},{"binary_version":"2.6.3-2ubuntu0.1","binary_name":"kea-ctrl-agent"},{"binary_name":"kea-dhcp-ddns-server","binary_version":"2.6.3-2ubuntu0.1"},{"binary_name":"kea-dhcp4-server","binary_version":"2.6.3-2ubuntu0.1"},{"binary_name":"kea-dhcp6-server","binary_version":"2.6.3-2ubuntu0.1"},{"binary_version":"2.6.3-2ubuntu0.1","binary_name":"python3-kea-connector"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3608.json"}}],"schema_version":"1.7.5","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":"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"}]}