{"id":"UBUNTU-CVE-2026-3104","details":"A specially crafted domain can be used to cause a memory leak in a BIND resolver simply by querying this domain. This issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1. BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.","modified":"2026-06-30T18:17:48.354118690Z","published":"2026-03-25T00:00:00Z","related":["USN-8124-1"],"upstream":["CVE-2026-3104"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-3104"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-3104"},{"type":"REPORT","url":"https://kb.isc.org/docs/cve-2026-3104"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8124-1"}],"affected":[{"package":{"name":"isc-dhcp","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/isc-dhcp?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.5-3ubuntu2","4.3.5-3ubuntu3","4.3.5-3ubuntu4","4.3.5-3ubuntu5","4.3.5-3ubuntu6","4.3.5-3ubuntu7","4.3.5-3ubuntu7.1","4.3.5-3ubuntu7.2","4.3.5-3ubuntu7.3","4.3.5-3ubuntu7.4"],"ecosystem_specific":{"binaries":[{"binary_version":"4.3.5-3ubuntu7.4","binary_name":"isc-dhcp-client"},{"binary_version":"4.3.5-3ubuntu7.4","binary_name":"isc-dhcp-client-ddns"},{"binary_name":"isc-dhcp-common","binary_version":"4.3.5-3ubuntu7.4"},{"binary_name":"isc-dhcp-relay","binary_version":"4.3.5-3ubuntu7.4"},{"binary_name":"isc-dhcp-server","binary_version":"4.3.5-3ubuntu7.4"},{"binary_name":"isc-dhcp-server-ldap","binary_version":"4.3.5-3ubuntu7.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3104.json"}},{"package":{"name":"bind9-libs","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/bind9-libs?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:9.11.16+dfsg-3~build1","1:9.11.16+dfsg-3~ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"libbind9-161","binary_version":"1:9.11.16+dfsg-3~ubuntu1"},{"binary_version":"1:9.11.16+dfsg-3~ubuntu1","binary_name":"libdns-export1109"},{"binary_name":"libdns1109","binary_version":"1:9.11.16+dfsg-3~ubuntu1"},{"binary_version":"1:9.11.16+dfsg-3~ubuntu1","binary_name":"libirs-export161"},{"binary_name":"libirs161","binary_version":"1:9.11.16+dfsg-3~ubuntu1"},{"binary_version":"1:9.11.16+dfsg-3~ubuntu1","binary_name":"libisc-export1105"},{"binary_name":"libisc1105","binary_version":"1:9.11.16+dfsg-3~ubuntu1"},{"binary_version":"1:9.11.16+dfsg-3~ubuntu1","binary_name":"libisccc-export161"},{"binary_name":"libisccc161","binary_version":"1:9.11.16+dfsg-3~ubuntu1"},{"binary_version":"1:9.11.16+dfsg-3~ubuntu1","binary_name":"libisccfg-export163"},{"binary_name":"libisccfg163","binary_version":"1:9.11.16+dfsg-3~ubuntu1"},{"binary_name":"liblwres161","binary_version":"1:9.11.16+dfsg-3~ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3104.json"}},{"package":{"name":"bind9-libs","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/bind9-libs?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:9.11.19+dfsg-2.1ubuntu1","1:9.11.19+dfsg-2.1ubuntu2","1:9.11.19+dfsg-2.1ubuntu3"],"ecosystem_specific":{"binaries":[{"binary_name":"libbind9-161","binary_version":"1:9.11.19+dfsg-2.1ubuntu3"},{"binary_name":"libdns-export1110","binary_version":"1:9.11.19+dfsg-2.1ubuntu3"},{"binary_name":"libdns1110","binary_version":"1:9.11.19+dfsg-2.1ubuntu3"},{"binary_name":"libirs-export161","binary_version":"1:9.11.19+dfsg-2.1ubuntu3"},{"binary_name":"libirs161","binary_version":"1:9.11.19+dfsg-2.1ubuntu3"},{"binary_version":"1:9.11.19+dfsg-2.1ubuntu3","binary_name":"libisc-export1105"},{"binary_name":"libisc1105","binary_version":"1:9.11.19+dfsg-2.1ubuntu3"},{"binary_version":"1:9.11.19+dfsg-2.1ubuntu3","binary_name":"libisccc-export161"},{"binary_version":"1:9.11.19+dfsg-2.1ubuntu3","binary_name":"libisccc161"},{"binary_version":"1:9.11.19+dfsg-2.1ubuntu3","binary_name":"libisccfg-export163"},{"binary_name":"libisccfg163","binary_version":"1:9.11.19+dfsg-2.1ubuntu3"},{"binary_version":"1:9.11.19+dfsg-2.1ubuntu3","binary_name":"liblwres161"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3104.json"}},{"package":{"name":"isc-dhcp","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/isc-dhcp?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.3-P1-2ubuntu5","4.4.3-P1-4ubuntu1","4.4.3-P1-4ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"isc-dhcp-client","binary_version":"4.4.3-P1-4ubuntu2"},{"binary_name":"isc-dhcp-client-ddns","binary_version":"4.4.3-P1-4ubuntu2"},{"binary_name":"isc-dhcp-common","binary_version":"4.4.3-P1-4ubuntu2"},{"binary_version":"4.4.3-P1-4ubuntu2","binary_name":"isc-dhcp-keama"},{"binary_name":"isc-dhcp-relay","binary_version":"4.4.3-P1-4ubuntu2"},{"binary_name":"isc-dhcp-server","binary_version":"4.4.3-P1-4ubuntu2"},{"binary_name":"isc-dhcp-server-ldap","binary_version":"4.4.3-P1-4ubuntu2"}]},"database_specific":{"source":"https://github.com/c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