{"id":"DEBIAN-CVE-2026-11605","details":"The issue is a resource exhaustion vulnerability associated with DNSSEC validation. BIND always validates all RRSIG records in an answer, even if they are not strictly needed. A query to an authoritative server/zone which returns many valid but superfluous RRSIG records causes the validator to waste disproportionate CPU time. This issue affects BIND 9 versions 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, and 9.20.9-S1 through 9.20.24-S1.","modified":"2026-10-01T03:01:45.199285540Z","published":"2026-07-22T15:16:51.573Z","upstream":["CVE-2026-11605"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-11605"}],"affected":[{"package":{"name":"bind9","ecosystem":"Debian:12","purl":"pkg:deb/debian/bind9?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.18.49-1~deb12u2"}]}],"versions":["1:9.18.12-1","1:9.18.13-1","1:9.18.16-1","1:9.18.16-1~deb12u1","1:9.18.16-1~deb12u1~bpo11+1","1:9.18.19-1~deb12u1","1:9.18.19-1~deb12u1~bpo11+1","1:9.18.24-1","1:9.18.24-1~bpo11+1","1:9.18.28-1~deb12u1","1:9.18.28-1~deb12u2","1:9.18.33-1~deb12u2","1:9.18.41-1~deb12u1","1:9.18.44-1~deb12u1","1:9.18.47-1~deb12u1","1:9.18.49-1~deb12u1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11605.json"}},{"package":{"name":"bind9","ecosystem":"Debian:13","purl":"pkg:deb/debian/bind9?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.20.26-1~deb13u1"}]}],"versions":["1:9.20.11-4","1:9.20.15-1","1:9.20.15-1~deb13u1","1:9.20.15-1~deb13u1~bpo12+1","1:9.20.15-2","1:9.20.18-1","1:9.20.18-1~deb13u1","1:9.20.18-1~deb13u1~bpo12+1","1:9.20.19-1","1:9.20.19-1~bpo12+1","1:9.20.20-1","1:9.20.20-1~bpo12+1","1:9.20.21-1","1:9.20.21-1~deb13u1","1:9.20.21-1~deb13u1~bpo12+1","1:9.20.22-1","1:9.20.23-1","1:9.20.23-1~deb13u1","1:9.20.23-1~deb13u1~bpo12+1","1:9.20.24-1","1:9.20.26-1~deb13u1~bpo12+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11605.json"}},{"package":{"name":"bind9","ecosystem":"Debian:14","purl":"pkg:deb/debian/bind9?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.20.26-1"}]}],"versions":["1:9.20.11-4","1:9.20.15-1","1:9.20.15-1~deb13u1","1:9.20.15-1~deb13u1~bpo12+1","1:9.20.15-2","1:9.20.18-1","1:9.20.18-1~deb13u1","1:9.20.18-1~deb13u1~bpo12+1","1:9.20.19-1","1:9.20.19-1~bpo12+1","1:9.20.20-1","1:9.20.20-1~bpo12+1","1:9.20.21-1","1:9.20.21-1~deb13u1","1:9.20.21-1~deb13u1~bpo12+1","1:9.20.22-1","1:9.20.23-1","1:9.20.23-1~deb13u1","1:9.20.23-1~deb13u1~bpo12+1","1:9.20.24-1","1:9.20.26-1~deb13u1","1:9.20.26-1~deb13u1~bpo12+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11605.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}