{
  "document": {
    "aggregate_severity": {
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      },
      {
        "category": "details",
        "text": "* SECURITY UPDATE: a resolver using dns64 with break-dnssec could abort\n     on a partially excluded AAAA RRset cached with a NOQNAME proof\n     (use-after-free on the filter64 path)\n     - debian/patches/CVE-2026-19666.patch: clear the NOQNAME proof alias\n       on the DNS64 filter64 path\n     - CVE-2026-19666\n   * SECURITY UPDATE: a resolver could abort after caching a negative answer\n     of exactly 65536 bytes as a zero-length negative cache record\n     - debian/patches/CVE-2026-19667.patch: reject negative cache records\n       that do not fit in a dns_rdata_t\n     - CVE-2026-19667\n   * SECURITY UPDATE: a resolver could abort on a wildcard answer whose\n     NOQNAME proof owner carries both a signed NSEC3 and an unsigned NSEC\n     - debian/patches/CVE-2026-80274.patch: record the denial type the\n       validator accepted and use it when caching and serving the NOQNAME\n       proof; adds dns_rdataset_addnoqnametype() to keep the libdns ABI\n     - CVE-2026-80274",
        "title": "Details"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1790790148",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1790790148"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/debian11els/advisories/2026/clsa-2026_1790790148.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-09-30T17:43:46Z",
      "generator": {
        "date": "2026-09-30T17:43:46Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CLSA-2026:1790790148",
      "initial_release_date": "2026-09-30T17:43:46Z",
      "revision_history": [
        {
          "date": "2026-09-30T17:43:46Z",
          "number": "1",
          "summary": "Initial version"
        }
      ],
      "status": "final",
      "version": "1"
    },
    "title": "Fix CVE(s): CVE-2026-19666, CVE-2026-19667, CVE-2026-80274"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Debian 11",
                "product": {
                  "name": "Debian 11",
                  "product_id": "Debian-11",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:debian:debian_linux:11:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Debian"
          }
        ],
        "category": "vendor",
        "name": "Software in the Public Interest, Inc."
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                "product": {
                  "name": "bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                  "product_id": "bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9-dev@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=arm64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                "product": {
                  "name": "bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                  "product_id": "bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9-dnsutils@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=arm64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bind9-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                "product": {
                  "name": "bind9-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                  "product_id": "bind9-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=arm64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                "product": {
                  "name": "bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                  "product_id": "bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9-host@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=arm64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                "product": {
                  "name": "bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                  "product_id": "bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9-utils@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=arm64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                "product": {
                  "name": "bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                  "product_id": "bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9-libs@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=arm64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "arm64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                "product": {
                  "name": "bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                  "product_id": "bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9-dev@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                "product": {
                  "name": "bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                  "product_id": "bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9-dnsutils@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bind9-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                "product": {
                  "name": "bind9-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                  "product_id": "bind9-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                "product": {
                  "name": "bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                  "product_id": "bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9-host@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                "product": {
                  "name": "bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                  "product_id": "bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9-utils@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                "product": {
                  "name": "bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                  "product_id": "bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9-libs@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=amd64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "amd64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                "product": {
                  "name": "bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                  "product_id": "bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9-dev@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=armel"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                "product": {
                  "name": "bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                  "product_id": "bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9-dnsutils@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=armel"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bind9-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                "product": {
                  "name": "bind9-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                  "product_id": "bind9-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=armel"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                "product": {
                  "name": "bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                  "product_id": "bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9-host@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=armel"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                "product": {
                  "name": "bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                  "product_id": "bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9-utils@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=armel"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                "product": {
                  "name": "bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                  "product_id": "bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9-libs@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=armel"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "armel"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "bind9utils-1:9.16.50-1~deb11u6+tuxcare.els1.all",
                "product": {
                  "name": "bind9utils-1:9.16.50-1~deb11u6+tuxcare.els1.all",
                  "product_id": "bind9utils-1:9.16.50-1~deb11u6+tuxcare.els1.all",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9utils@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=all"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bind9-doc-1:9.16.50-1~deb11u6+tuxcare.els1.all",
                "product": {
                  "name": "bind9-doc-1:9.16.50-1~deb11u6+tuxcare.els1.all",
                  "product_id": "bind9-doc-1:9.16.50-1~deb11u6+tuxcare.els1.all",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/bind9-doc@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=all"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.all",
                "product": {
                  "name": "dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.all",
                  "product_id": "dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.all",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/dnsutils@1:9.16.50-1~deb11u6%2Btuxcare.els1?arch=all"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "all"
          }
        ],
        "category": "vendor",
        "name": "TuxCare"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.arm64 as a component of Debian 11",
          "product_id": "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.arm64"
        },
        "product_reference": "bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.amd64 as a component of Debian 11",
          "product_id": "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.amd64"
        },
        "product_reference": "bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.armel as a component of Debian 11",
          "product_id": "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.armel"
        },
        "product_reference": "bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9utils-1:9.16.50-1~deb11u6+tuxcare.els1.all as a component of Debian 11",
          "product_id": "Debian-11:bind9utils-1:9.16.50-1~deb11u6+tuxcare.els1.all"
        },
        "product_reference": "bind9utils-1:9.16.50-1~deb11u6+tuxcare.els1.all",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64 as a component of Debian 11",
          "product_id": "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64"
        },
        "product_reference": "bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64 as a component of Debian 11",
          "product_id": "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64"
        },
        "product_reference": "bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.armel as a component of Debian 11",
          "product_id": "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.armel"
        },
        "product_reference": "bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-1:9.16.50-1~deb11u6+tuxcare.els1.arm64 as a component of Debian 11",
          "product_id": "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.arm64"
        },
        "product_reference": "bind9-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-1:9.16.50-1~deb11u6+tuxcare.els1.armel as a component of Debian 11",
          "product_id": "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.armel"
        },
        "product_reference": "bind9-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-1:9.16.50-1~deb11u6+tuxcare.els1.amd64 as a component of Debian 11",
          "product_id": "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.amd64"
        },
        "product_reference": "bind9-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.armel as a component of Debian 11",
          "product_id": "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.armel"
        },
        "product_reference": "bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.amd64 as a component of Debian 11",
          "product_id": "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.amd64"
        },
        "product_reference": "bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.arm64 as a component of Debian 11",
          "product_id": "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.arm64"
        },
        "product_reference": "bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.armel as a component of Debian 11",
          "product_id": "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.armel"
        },
        "product_reference": "bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64 as a component of Debian 11",
          "product_id": "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64"
        },
        "product_reference": "bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64 as a component of Debian 11",
          "product_id": "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64"
        },
        "product_reference": "bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.amd64 as a component of Debian 11",
          "product_id": "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.amd64"
        },
        "product_reference": "bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.armel as a component of Debian 11",
          "product_id": "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.armel"
        },
        "product_reference": "bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.arm64 as a component of Debian 11",
          "product_id": "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.arm64"
        },
        "product_reference": "bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bind9-doc-1:9.16.50-1~deb11u6+tuxcare.els1.all as a component of Debian 11",
          "product_id": "Debian-11:bind9-doc-1:9.16.50-1~deb11u6+tuxcare.els1.all"
        },
        "product_reference": "bind9-doc-1:9.16.50-1~deb11u6+tuxcare.els1.all",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.all as a component of Debian 11",
          "product_id": "Debian-11:dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.all"
        },
        "product_reference": "dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.all",
        "relates_to_product_reference": "Debian-11"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-19666",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "notes": [
        {
          "category": "description",
          "text": "On a resolver configured to use ``dns64``, if an applicable answer from the authoritative server is malformed in a specific way, the resolver `named` process will exit unexpectedly.\nThis 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.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9-doc-1:9.16.50-1~deb11u6+tuxcare.els1.all",
          "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9utils-1:9.16.50-1~deb11u6+tuxcare.els1.all",
          "Debian-11:dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.all"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-19666"
        },
        {
          "category": "external",
          "summary": "https://downloads.isc.org/isc/bind9/9.20.29",
          "url": "https://downloads.isc.org/isc/bind9/9.20.29"
        },
        {
          "category": "external",
          "summary": "https://downloads.isc.org/isc/bind9/9.21.26",
          "url": "https://downloads.isc.org/isc/bind9/9.21.26"
        },
        {
          "category": "external",
          "summary": "https://kb.isc.org/docs/cve-2026-19666",
          "url": "https://kb.isc.org/docs/cve-2026-19666"
        }
      ],
      "release_date": "2026-09-16T15:17:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-30T17:42:30.674359Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1790790148",
          "product_ids": [
            "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9-doc-1:9.16.50-1~deb11u6+tuxcare.els1.all",
            "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9utils-1:9.16.50-1~deb11u6+tuxcare.els1.all",
            "Debian-11:dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.all"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1790790148"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    },
    {
      "cve": "CVE-2026-19667",
      "cwe": {
        "id": "CWE-197",
        "name": "Numeric Truncation Error"
      },
      "notes": [
        {
          "category": "description",
          "text": "If an attacker-controlled authoritative server can produce a negative answer that is exactly 65536 bytes, then a flaw in `named` results in a negative cache entry of 0 bytes. When this entry is subsequently read, `named` aborts.\nThis 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.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9-doc-1:9.16.50-1~deb11u6+tuxcare.els1.all",
          "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9utils-1:9.16.50-1~deb11u6+tuxcare.els1.all",
          "Debian-11:dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.all"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-19667"
        },
        {
          "category": "external",
          "summary": "https://downloads.isc.org/isc/bind9/9.20.29",
          "url": "https://downloads.isc.org/isc/bind9/9.20.29"
        },
        {
          "category": "external",
          "summary": "https://downloads.isc.org/isc/bind9/9.21.26",
          "url": "https://downloads.isc.org/isc/bind9/9.21.26"
        },
        {
          "category": "external",
          "summary": "https://kb.isc.org/docs/cve-2026-19667",
          "url": "https://kb.isc.org/docs/cve-2026-19667"
        }
      ],
      "release_date": "2026-09-16T14:17:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-30T17:42:30.674359Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1790790148",
          "product_ids": [
            "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9-doc-1:9.16.50-1~deb11u6+tuxcare.els1.all",
            "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9utils-1:9.16.50-1~deb11u6+tuxcare.els1.all",
            "Debian-11:dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.all"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1790790148"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    },
    {
      "cve": "CVE-2026-80274",
      "cwe": {
        "id": "CWE-617",
        "name": "Reachable Assertion"
      },
      "notes": [
        {
          "category": "description",
          "text": "If a BIND resolver sends a query for a DNSSEC-signed authoritative zone, and the authoritative server replies with a valid wildcard answer and signed NSEC3 proof, followed by an unsigned NSEC at the same owner name, it will trigger an unexpected program exit.\nThis 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.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9-doc-1:9.16.50-1~deb11u6+tuxcare.els1.all",
          "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
          "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
          "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
          "Debian-11:bind9utils-1:9.16.50-1~deb11u6+tuxcare.els1.all",
          "Debian-11:dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.all"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-80274"
        },
        {
          "category": "external",
          "summary": "https://downloads.isc.org/isc/bind9/9.20.29",
          "url": "https://downloads.isc.org/isc/bind9/9.20.29"
        },
        {
          "category": "external",
          "summary": "https://downloads.isc.org/isc/bind9/9.21.26",
          "url": "https://downloads.isc.org/isc/bind9/9.21.26"
        },
        {
          "category": "external",
          "summary": "https://kb.isc.org/docs/cve-2026-80274",
          "url": "https://kb.isc.org/docs/cve-2026-80274"
        }
      ],
      "release_date": "2026-09-16T15:17:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-30T17:42:30.674359Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1790790148",
          "product_ids": [
            "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-dev-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9-doc-1:9.16.50-1~deb11u6+tuxcare.els1.all",
            "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-host-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-libs-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.amd64",
            "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.arm64",
            "Debian-11:bind9-utils-1:9.16.50-1~deb11u6+tuxcare.els1.armel",
            "Debian-11:bind9utils-1:9.16.50-1~deb11u6+tuxcare.els1.all",
            "Debian-11:dnsutils-1:9.16.50-1~deb11u6+tuxcare.els1.all"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1790790148"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    }
  ]
}