{"schema_version": "1.7.0", "id": "RLSA-2026:75578", "modified": "2026-10-06T06:15:18.156070Z", "published": "2026-10-06T06:05:20.701291Z", "upstream": ["CVE-2026-19666", "CVE-2026-19667", "CVE-2026-80274", "CVE-2026-81563", "CVE-2026-81736"], "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.", "severity": [{"type": "CVSS_V3", "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}], "affected": [{"package": {"ecosystem": "Rocky Linux:9", "name": "bind9.18", "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"}}]}], "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"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}], "database_specific": {"license": "CC-BY-4.0", "license_url": "https://creativecommons.org/licenses/by/4.0/", "source_advisory": "RHSA-2026:75578"}}