rlsa-2026:54509
Vulnerability from osv_rocky
Published
2026-08-14 06:01
Modified
2026-08-14 12:09
Summary
Important: bind9.16 security update
Details

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):

  • bind9: bind: Potential wildcard CNAME RPZ policy bypass (CVE-2026-11331)

  • bind: bind9: DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field (CVE-2026-13321)

  • bind: bind9: Potential memory usage beyond configured limits (CVE-2026-11622)

  • bind: bind9: Cache poisoning via label count discrepancy, RRSIG, wildcards (CVE-2026-11721)

  • bind: bind9: Unexpected exit with NSEC and NSEC3 both present (CVE-2026-13204)

  • bind: bind9: Incorrect acceptance of NSEC3 records (CVE-2026-10723)

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.

Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Credits
Rocky Enterprise Software Foundation
Red Hat
References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:8",
        "name": "bind9.16",
        "purl": "pkg:rpm/rocky-linux/bind9.16?distro=rocky-linux-8\u0026epoch=2"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "AppStream"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:9.16.23-0.22.el8_10.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "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-2026:54509"
  },
  "details": "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.\n\nSecurity Fix(es):\n\n* bind9: bind: Potential wildcard CNAME RPZ policy bypass (CVE-2026-11331)\n\n* bind: bind9: DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field (CVE-2026-13321)\n\n* bind: bind9: Potential memory usage beyond configured limits (CVE-2026-11622)\n\n* bind: bind9: Cache poisoning via label count discrepancy, RRSIG, wildcards (CVE-2026-11721)\n\n* bind: bind9: Unexpected exit with NSEC and NSEC3 both present (CVE-2026-13204)\n\n* bind: bind9: Incorrect acceptance of NSEC3 records (CVE-2026-10723)\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.",
  "id": "RLSA-2026:54509",
  "modified": "2026-08-14T12:09:07.196727Z",
  "published": "2026-08-14T06:01:12.756713Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:54509"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2503721"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2504166"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2504298"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2504338"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2504447"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2504560"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:54509"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: bind9.16 security update",
  "upstream": [
    "CVE-2026-10723",
    "CVE-2026-11331",
    "CVE-2026-11622",
    "CVE-2026-11721",
    "CVE-2026-13204",
    "CVE-2026-13321"
  ]
}



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