{"id":"USN-8682-1","summary":"bind9 vulnerabilities","details":"Vitaly Simonovich discovered that Bind could exhaust memory during\nGSS-API TKEY negotiation. A remote attacker could possibly use this\nissue to cause Bind to use excessive resources, leading to a denial of\nservice. (CVE-2026-3039)\n\nShuhan Zhang discovered that Bind incorrectly handled self-pointed glue\nrecords. A remote attacker could possibly use this issue to use Bind in\ndenial of service amplification attacks against other systems.\nThis issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.\n(CVE-2026-3592)\n\nIt was discovered that Bind incorrectly handled DNS messages whose\nclass was not IN. A remote attacker could possibly use this issue to\ncause Bind to crash, resulting in a denial of service. This issue only\naffected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2026-5946)","modified":"2026-08-27T04:41:18.710869316Z","published":"2026-08-26T16:49:52Z","related":["UBUNTU-CVE-2026-3039","UBUNTU-CVE-2026-3592","UBUNTU-CVE-2026-5946"],"upstream":["CVE-2026-3039","CVE-2026-3592","CVE-2026-5946","UBUNTU-CVE-2026-3039","UBUNTU-CVE-2026-3592","UBUNTU-CVE-2026-5946"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8682-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-3039"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-3592"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-5946"}],"affected":[{"package":{"name":"bind9","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/bind9?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.9.5.dfsg-3ubuntu0.19+esm14"}]}],"versions":["1:9.9.3.dfsg.P2-4ubuntu1","1:9.9.3.dfsg.P2-4ubuntu2","1:9.9.3.dfsg.P2-4ubuntu3","1:9.9.5.dfsg-2","1:9.9.5.dfsg-3","1:9.9.5.dfsg-3ubuntu0.1","1:9.9.5.dfsg-3ubuntu0.2","1:9.9.5.dfsg-3ubuntu0.3","1:9.9.5.dfsg-3ubuntu0.4","1:9.9.5.dfsg-3ubuntu0.5","1:9.9.5.dfsg-3ubuntu0.6","1:9.9.5.dfsg-3ubuntu0.7","1:9.9.5.dfsg-3ubuntu0.8","1:9.9.5.dfsg-3ubuntu0.9","1:9.9.5.dfsg-3ubuntu0.10","1:9.9.5.dfsg-3ubuntu0.11","1:9.9.5.dfsg-3ubuntu0.12","1:9.9.5.dfsg-3ubuntu0.13","1:9.9.5.dfsg-3ubuntu0.14","1:9.9.5.dfsg-3ubuntu0.15","1:9.9.5.dfsg-3ubuntu0.16","1:9.9.5.dfsg-3ubuntu0.17","1:9.9.5.dfsg-3ubuntu0.18","1:9.9.5.dfsg-3ubuntu0.19","1:9.9.5.dfsg-3ubuntu0.19+esm1","1:9.9.5.dfsg-3ubuntu0.19+esm2","1:9.9.5.dfsg-3ubuntu0.19+esm3","1:9.9.5.dfsg-3ubuntu0.19+esm4","1:9.9.5.dfsg-3ubuntu0.19+esm5","1:9.9.5.dfsg-3ubuntu0.19+esm6","1:9.9.5.dfsg-3ubuntu0.19+esm7","1:9.9.5.dfsg-3ubuntu0.19+esm9","1:9.9.5.dfsg-3ubuntu0.19+esm10","1:9.9.5.dfsg-3ubuntu0.19+esm11","1:9.9.5.dfsg-3ubuntu0.19+esm12","1:9.9.5.dfsg-3ubuntu0.19+esm13"],"ecosystem_specific":{"binaries":[{"binary_name":"bind9","binary_version":"1:9.9.5.dfsg-3ubuntu0.19+esm14"},{"binary_name":"bind9-host","binary_version":"1:9.9.5.dfsg-3ubuntu0.19+esm14"},{"binary_name":"bind9utils","binary_version":"1:9.9.5.dfsg-3ubuntu0.19+esm14"},{"binary_name":"dnsutils","binary_version":"1:9.9.5.dfsg-3ubuntu0.19+esm14"},{"binary_name":"host","binary_version":"1:9.9.5.dfsg-3ubuntu0.19+esm14"},{"binary_name":"libbind9-90","binary_version":"1:9.9.5.dfsg-3ubuntu0.19+esm14"},{"binary_name":"libdns100","binary_version":"1:9.9.5.dfsg-3ubuntu0.19+esm14"},{"binary_version":"1:9.9.5.dfsg-3ubuntu0.19+esm14","binary_name":"libisc95"},{"binary_name":"libisccc90","binary_version":"1:9.9.5.dfsg-3ubuntu0.19+esm14"},{"binary_version":"1:9.9.5.dfsg-3ubuntu0.19+esm14","binary_name":"libisccfg90"},{"binary_name":"liblwres90","binary_version":"1:9.9.5.dfsg-3ubuntu0.19+esm14"},{"binary_version":"1:9.9.5.dfsg-3ubuntu0.19+esm14","binary_name":"lwresd"}],"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:14.04:LTS","cves":[{"id":"CVE-2026-3039","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8682-1.json"}},{"package":{"name":"bind9","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/bind9?arch=source&distro=esm-infra-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10"}]}],"versions":["1:9.9.5.dfsg-11ubuntu1","1:9.9.5.dfsg-12","1:9.9.5.dfsg-12.1","1:9.9.5.dfsg-12.1ubuntu1","1:9.10.3.dfsg.P2-4","1:9.10.3.dfsg.P2-5","1:9.10.3.dfsg.P4-3","1:9.10.3.dfsg.P4-4","1:9.10.3.dfsg.P4-5","1:9.10.3.dfsg.P4-8","1:9.10.3.dfsg.P4-8ubuntu1","1:9.10.3.dfsg.P4-8ubuntu1.1","1:9.10.3.dfsg.P4-8ubuntu1.2","1:9.10.3.dfsg.P4-8ubuntu1.3","1:9.10.3.dfsg.P4-8ubuntu1.4","1:9.10.3.dfsg.P4-8ubuntu1.5","1:9.10.3.dfsg.P4-8ubuntu1.6","1:9.10.3.dfsg.P4-8ubuntu1.7","1:9.10.3.dfsg.P4-8ubuntu1.8","1:9.10.3.dfsg.P4-8ubuntu1.9","1:9.10.3.dfsg.P4-8ubuntu1.10","1:9.10.3.dfsg.P4-8ubuntu1.11","1:9.10.3.dfsg.P4-8ubuntu1.12","1:9.10.3.dfsg.P4-8ubuntu1.14","1:9.10.3.dfsg.P4-8ubuntu1.15","1:9.10.3.dfsg.P4-8ubuntu1.16","1:9.10.3.dfsg.P4-8ubuntu1.17","1:9.10.3.dfsg.P4-8ubuntu1.18","1:9.10.3.dfsg.P4-8ubuntu1.19","1:9.10.3.dfsg.P4-8ubuntu1.19+esm1","1:9.10.3.dfsg.P4-8ubuntu1.19+esm2","1:9.10.3.dfsg.P4-8ubuntu1.19+esm3","1:9.10.3.dfsg.P4-8ubuntu1.19+esm5","1:9.10.3.dfsg.P4-8ubuntu1.19+esm6","1:9.10.3.dfsg.P4-8ubuntu1.19+esm7","1:9.10.3.dfsg.P4-8ubuntu1.19+esm8","1:9.10.3.dfsg.P4-8ubuntu1.19+esm9"],"ecosystem_specific":{"binaries":[{"binary_name":"bind9","binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10"},{"binary_name":"bind9-host","binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10"},{"binary_name":"bind9utils","binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10"},{"binary_name":"dnsutils","binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10"},{"binary_name":"host","binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10"},{"binary_name":"libbind9-140","binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10"},{"binary_name":"libdns-export162","binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10"},{"binary_name":"libdns162","binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10"},{"binary_name":"libirs-export141","binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10"},{"binary_name":"libirs141","binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10"},{"binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10","binary_name":"libisc-export160"},{"binary_name":"libisc160","binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10"},{"binary_name":"libisccc-export140","binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10"},{"binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10","binary_name":"libisccc140"},{"binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10","binary_name":"libisccfg-export140"},{"binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10","binary_name":"libisccfg140"},{"binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10","binary_name":"liblwres141"},{"binary_name":"lwresd","binary_version":"1:9.10.3.dfsg.P4-8ubuntu1.19+esm10"}],"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"id":"CVE-2026-3039","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"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"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8682-1.json"}},{"package":{"name":"bind9","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/bind9?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.11.3+dfsg-1ubuntu1.19+esm5"}]}],"versions":["1:9.10.3.dfsg.P4-12.6ubuntu1","1:9.11.2.P1-1ubuntu2","1:9.11.2.P1-1ubuntu3","1:9.11.2.P1-1ubuntu4","1:9.11.2.P1-1ubuntu5","1:9.11.3+dfsg-1ubuntu1","1:9.11.3+dfsg-1ubuntu1.1","1:9.11.3+dfsg-1ubuntu1.2","1:9.11.3+dfsg-1ubuntu1.3","1:9.11.3+dfsg-1ubuntu1.5","1:9.11.3+dfsg-1ubuntu1.7","1:9.11.3+dfsg-1ubuntu1.8","1:9.11.3+dfsg-1ubuntu1.9","1:9.11.3+dfsg-1ubuntu1.10","1:9.11.3+dfsg-1ubuntu1.11","1:9.11.3+dfsg-1ubuntu1.12","1:9.11.3+dfsg-1ubuntu1.13","1:9.11.3+dfsg-1ubuntu1.14","1:9.11.3+dfsg-1ubuntu1.15","1:9.11.3+dfsg-1ubuntu1.16","1:9.11.3+dfsg-1ubuntu1.17","1:9.11.3+dfsg-1ubuntu1.18","1:9.11.3+dfsg-1ubuntu1.19+esm1","1:9.11.3+dfsg-1ubuntu1.19+esm2","1:9.11.3+dfsg-1ubuntu1.19+esm3","1:9.11.3+dfsg-1ubuntu1.19+esm4"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"bind9","binary_version":"1:9.11.3+dfsg-1ubuntu1.19+esm5"},{"binary_name":"bind9-host","binary_version":"1:9.11.3+dfsg-1ubuntu1.19+esm5"},{"binary_name":"bind9utils","binary_version":"1:9.11.3+dfsg-1ubuntu1.19+esm5"},{"binary_version":"1:9.11.3+dfsg-1ubuntu1.19+esm5","binary_name":"dnsutils"},{"binary_name":"libbind9-160","binary_version":"1:9.11.3+dfsg-1ubuntu1.19+esm5"},{"binary_version":"1:9.11.3+dfsg-1ubuntu1.19+esm5","binary_name":"libdns-export1100"},{"binary_version":"1:9.11.3+dfsg-1ubuntu1.19+esm5","binary_name":"libdns1100"},{"binary_name":"libirs-export160","binary_version":"1:9.11.3+dfsg-1ubuntu1.19+esm5"},{"binary_version":"1:9.11.3+dfsg-1ubuntu1.19+esm5","binary_name":"libirs160"},{"binary_name":"libisc-export169","binary_version":"1:9.11.3+dfsg-1ubuntu1.19+esm5"},{"binary_version":"1:9.11.3+dfsg-1ubuntu1.19+esm5","binary_name":"libisc169"},{"binary_version":"1:9.11.3+dfsg-1ubuntu1.19+esm5","binary_name":"libisccc-export160"},{"binary_name":"libisccc160","binary_version":"1:9.11.3+dfsg-1ubuntu1.19+esm5"},{"binary_version":"1:9.11.3+dfsg-1ubuntu1.19+esm5","binary_name":"libisccfg-export160"},{"binary_name":"libisccfg160","binary_version":"1:9.11.3+dfsg-1ubuntu1.19+esm5"},{"binary_version":"1:9.11.3+dfsg-1ubuntu1.19+esm5","binary_name":"liblwres160"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"id":"CVE-2026-3039","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"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"}]},{"id":"CVE-2026-3592","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-5946","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"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8682-1.json"}},{"package":{"name":"bind9","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/bind9?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.18.30-0ubuntu0.20.04.2+esm2"}]}],"versions":["1:9.11.5.P4+dfsg-5.1ubuntu2","1:9.11.5.P4+dfsg-5.1ubuntu3","1:9.11.5.P4+dfsg-5.1ubuntu4","1:9.11.5.P4+dfsg-5.1ubuntu5","1:9.11.14+dfsg-1ubuntu1","1:9.11.14+dfsg-3ubuntu1","1:9.16.0-1ubuntu3","1:9.16.0-1ubuntu4","1:9.16.0-1ubuntu5","1:9.16.1-0ubuntu1","1:9.16.1-0ubuntu2","1:9.16.1-0ubuntu2.1","1:9.16.1-0ubuntu2.2","1:9.16.1-0ubuntu2.3","1:9.16.1-0ubuntu2.4","1:9.16.1-0ubuntu2.6","1:9.16.1-0ubuntu2.7","1:9.16.1-0ubuntu2.8","1:9.16.1-0ubuntu2.9","1:9.16.1-0ubuntu2.10","1:9.16.1-0ubuntu2.11","1:9.16.1-0ubuntu2.12","1:9.16.1-0ubuntu2.14","1:9.16.1-0ubuntu2.15","1:9.16.1-0ubuntu2.16","1:9.16.48-0ubuntu0.20.04.1","1:9.18.28-0ubuntu0.20.04.1","1:9.18.30-0ubuntu0.20.04.1","1:9.18.30-0ubuntu0.20.04.2","1:9.18.30-0ubuntu0.20.04.2+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"1:9.18.30-0ubuntu0.20.04.2+esm2","binary_name":"bind9"},{"binary_version":"1:9.18.30-0ubuntu0.20.04.2+esm2","binary_name":"bind9-dnsutils"},{"binary_name":"bind9-host","binary_version":"1:9.18.30-0ubuntu0.20.04.2+esm2"},{"binary_version":"1:9.18.30-0ubuntu0.20.04.2+esm2","binary_name":"bind9-libs"},{"binary_version":"1:9.18.30-0ubuntu0.20.04.2+esm2","binary_name":"bind9-utils"},{"binary_version":"1:9.18.30-0ubuntu0.20.04.2+esm2","binary_name":"bind9utils"},{"binary_name":"dnsutils","binary_version":"1:9.18.30-0ubuntu0.20.04.2+esm2"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2026-3039","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-3592"},{"id":"CVE-2026-5946","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"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"}]}],"ecosystem":"Ubuntu:Pro:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8682-1.json"}}],"schema_version":"1.9.0"}