{"id":"RLSA-2026:75578","summary":"Important: bind9.18 security update","details":"BIND (Berkeley Internet Name Domain) is an implementation of the DNS (Domain Name System) protocols. BIND includes a DNS server (named), which resolves host names to IP addresses; a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating properly.\n\nSecurity Fix(es):\n\n* bind: BIND 9: Remote Denial of Service via cached SVCB/HTTPS AliasMode records (CVE-2026-81736)\n\n* bind9: bind: BIND 9: Denial of Service via 16-bit length truncation in DNS negative cache handling (CVE-2026-19667)\n\n* bind: BIND resolver: Denial of Service due to resource exhaustion in SVCB/HTTPS AliasMode processing (CVE-2026-81563)\n\n* bind: BIND: Denial of Service via crafted DNSSEC reply (CVE-2026-80274)\n\n* bind: BIND: Denial of Service via malformed DNS64 responses (CVE-2026-19666)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","modified":"2026-10-06T06:45:03.712529428Z","published":"2026-10-06T06:05:20.701291Z","upstream":["CVE-2026-19666","CVE-2026-19667","CVE-2026-80274","CVE-2026-81563","CVE-2026-81736"],"database_specific":{"license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:75578"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:75578"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535432"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535435"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535461"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535466"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535477"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:75578"}],"affected":[{"package":{"name":"bind9.18","ecosystem":"Rocky Linux:9","purl":"pkg:rpm/rocky-linux/bind9.18?distro=rocky-linux-9&epoch=2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:9.18.29-14.el9_8.10"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:75578.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"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}