Important: bind security update

{
  "id": "64fd9fb3df077a7d4c4f723664534bad05c0333ddc43cf6a49377dbc9a45f0e6",
  "url": "https://osv.dev/vulnerability/RLSA-2026%3A75577",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Important: bind security update",
    "summary": "The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly. Security Fix(es): * bind: BIND 9: Remote Denial of Service via cached SVCB/HTTPS AliasMode records (CVE-2026-81736) * bind9: bind: BIND 9: Denial of Service via 16-bit length truncation in DNS negative cache handling (CVE-2026-19667) * bind: BIND resolver: Denial of Service due to resource exhaustion in SVCB/HTTPS AliasMode processing (CVE-2026-81563) * bind: BIND: Denial of Service via crafted DNSSEC reply (CVE-2026-80274) * bind: BIND: Denial of Service via malformed DNS64 responses (CVE-2026-19666) For 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.",
    "evidence": "osv:RLSA-2026:75577",
    "products": [
      {
        "name": {
          "value": "bind",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2:9.18.33-15.el10_2.12",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "RLSA-2026:75577",
      "aliases": [
        "RLSA-2026:75577"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2:9.18.33-15.el10_2.12"
                }
              ],
              "database_specific": {
                "yum_repository": "AppStream"
              }
            }
          ],
          "package": {
            "name": "bind",
            "purl": "pkg:rpm/rocky-linux/bind?distro=rocky-linux-10&epoch=2",
            "ecosystem": "Rocky Linux:10"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/resf-osv-data/RLSA-2026:75577.json"
          }
        }
      ],
      "modified": "2026-10-06T12:45:02.583595534Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-19666",
        "CVE-2026-19667",
        "CVE-2026-80274",
        "CVE-2026-81563",
        "CVE-2026-81736"
      ],
      "references": [
        "https://errata.rockylinux.org/RLSA-2026:75577",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2535432",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2535435",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2535461",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2535466",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2535477",
        "https://access.redhat.com/errata/RHSA-2026:75577"
      ],
      "provider_metadata": {
        "license": "CC-BY-4.0",
        "license_url": "https://creativecommons.org/licenses/by/4.0/",
        "source_advisory": "RHSA-2026:75577"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-19666",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-19667",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-80274",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-81563",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-81736",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 89027,
  "published_at": "2026-10-06T12:10:42.614+00:00"
}