bind security update

{
  "id": "f6257f0a25a7cb5b92fe7df79f4f6e9daa6784f953cf49970ce4f22f793741ca",
  "url": "https://osv.dev/vulnerability/OESA-2026-4340",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "bind security update",
    "summary": "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. Security Fix(es): For a secondary zone with transfers restricted by TSIG, `named` may start to serve the data provided in a zone transfer before the final message with the TSIG signature arrives. This could allow an attacker that does not actually possess a valid TSIG signature to send unauthorized zone contents to a secondary server. Although no TSIG signature ever arrives, `named` does not rollback to the pre-transfer state. To exploit the vulnerability, the transfer must be a multi-message TCP IXFR, as described by RFC 8945. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.(CVE-2026-19033) An attacker may be able to cause a `named` resolver to abort. The attack requires inducing the victim resolver to send multiple queries for a DNSSEC-signed zone hosted by an authoritative server under the control of the attacker. If the auth responds with a particular sequence of crafted answers, and those answers arrive in a particular order with particular timing, the `named` resolver will encounter a use-after-free bug, and abort. This issue af",
    "evidence": "osv:OESA-2026-4340",
    "products": [
      {
        "name": {
          "value": "bind",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "9.18.21-14.oe2403sp3",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "OESA-2026-4340",
      "aliases": [
        "OESA-2026-4340"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "9.18.21-14.oe2403sp3"
                }
              ]
            }
          ],
          "package": {
            "name": "bind",
            "purl": "pkg:rpm/openEuler/bind&distro=openEuler-24.03-LTS-SP3",
            "ecosystem": "openEuler:24.03-LTS-SP3"
          },
          "database_specific": {
            "source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4340.json"
          },
          "ecosystem_specific": {
            "src": [
              "bind-9.18.21-14.oe2403sp3.src.rpm"
            ],
            "noarch": [
              "bind-dnssec-doc-9.18.21-14.oe2403sp3.noarch.rpm",
              "bind-license-9.18.21-14.oe2403sp3.noarch.rpm"
            ],
            "x86_64": [
              "bind-9.18.21-14.oe2403sp3.x86_64.rpm",
              "bind-chroot-9.18.21-14.oe2403sp3.x86_64.rpm",
              "bind-debuginfo-9.18.21-14.oe2403sp3.x86_64.rpm",
              "bind-debugsource-9.18.21-14.oe2403sp3.x86_64.rpm",
              "bind-devel-9.18.21-14.oe2403sp3.x86_64.rpm",
              "bind-dnssec-utils-9.18.21-14.oe2403sp3.x86_64.rpm",
              "bind-libs-9.18.21-14.oe2403sp3.x86_64.rpm",
              "bind-utils-9.18.21-14.oe2403sp3.x86_64.rpm"
            ],
            "aarch64": [
              "bind-9.18.21-14.oe2403sp3.aarch64.rpm",
              "bind-chroot-9.18.21-14.oe2403sp3.aarch64.rpm",
              "bind-debuginfo-9.18.21-14.oe2403sp3.aarch64.rpm",
              "bind-debugsource-9.18.21-14.oe2403sp3.aarch64.rpm",
              "bind-devel-9.18.21-14.oe2403sp3.aarch64.rpm",
              "bind-dnssec-utils-9.18.21-14.oe2403sp3.aarch64.rpm",
              "bind-libs-9.18.21-14.oe2403sp3.aarch64.rpm",
              "bind-utils-9.18.21-14.oe2403sp3.aarch64.rpm"
            ]
          }
        }
      ],
      "modified": "2026-10-16T12:15:13.595216371Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-19033",
        "CVE-2026-19662",
        "CVE-2026-19941",
        "CVE-2026-75029",
        "CVE-2026-78301"
      ],
      "references": [
        "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4340",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-19033",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-19662",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-19941",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-75029",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-78301"
      ],
      "provider_metadata": {
        "severity": "Medium"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-19033",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-19662",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-19941",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-75029",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-78301",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 340838,
  "published_at": "2026-10-16T11:59:32+00:00"
}