alsa-2026:54509
Vulnerability from osv_almalinux
Published
2026-08-13 00:00
Modified
2026-08-13 12:02
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.

References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "bind9.16"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "32:9.16.23-0.22.el8_10.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "bind9.16-chroot"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "32:9.16.23-0.22.el8_10.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "bind9.16-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "32:9.16.23-0.22.el8_10.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "bind9.16-dnssec-utils"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "32:9.16.23-0.22.el8_10.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "bind9.16-doc"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "32:9.16.23-0.22.el8_10.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "bind9.16-libs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "32:9.16.23-0.22.el8_10.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "bind9.16-license"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "32:9.16.23-0.22.el8_10.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "bind9.16-utils"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "32:9.16.23-0.22.el8_10.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "python3-bind9.16"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "32:9.16.23-0.22.el8_10.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "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  * bind: bind9: DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field (CVE-2026-13321)\n  * bind: bind9: Potential memory usage beyond configured limits (CVE-2026-11622)\n  * bind: bind9: Cache poisoning via label count discrepancy, RRSIG, wildcards (CVE-2026-11721)\n  * bind: bind9: Unexpected exit with NSEC and NSEC3 both present (CVE-2026-13204)\n  * bind: bind9: Incorrect acceptance of NSEC3 records (CVE-2026-10723)\n\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.\n",
  "id": "ALSA-2026:54509",
  "modified": "2026-08-13T12:02:20Z",
  "published": "2026-08-13T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:54509"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-10723"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-11331"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-11622"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-11721"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-13204"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-13321"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2503721"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2504166"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2504298"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2504338"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2504447"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2504560"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/8/ALSA-2026-54509.html"
    }
  ],
  "related": [
    "CVE-2026-11331",
    "CVE-2026-13321",
    "CVE-2026-11622",
    "CVE-2026-11721",
    "CVE-2026-13204",
    "CVE-2026-10723"
  ],
  "summary": "Important: bind9.16 security update"
}



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