{
  "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: double free when growing the bit writer fails\n     - debian/patches/CVE-2020-22219.patch: add _nofree variants of the\n       safe_realloc helpers and use them where the caller keeps its own\n       pointer on failure, so bitwriter_grow_() no longer leaves a freed\n       bw->buffer for FLAC__bitwriter_free() to release again\n       (upstream 21fe95ee82).\n     - CVE-2020-22219",
        "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-2026:1788193482",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1788193482"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/ubuntu18.04els/advisories/2026/clsa-2026_1788193482.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-08-31T16:25:30Z",
      "generator": {
        "date": "2026-08-31T16:25:30Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CLSA-2026:1788193482",
      "initial_release_date": "2026-08-31T16:25:30Z",
      "revision_history": [
        {
          "date": "2026-08-31T16:25:30Z",
          "number": "1",
          "summary": "Initial version"
        }
      ],
      "status": "final",
      "version": "1"
    },
    "title": "Fix CVE(s): CVE-2020-22219"
  },
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        "branches": [
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                "name": "Ubuntu 18.04",
                "product": {
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                  "product_id": "Ubuntu-18",
                  "product_identification_helper": {
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            "name": "Ubuntu"
          }
        ],
        "category": "vendor",
        "name": "Canonical Ltd."
      },
      {
        "branches": [
          {
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                "product": {
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    ],
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        },
        "product_reference": "libflac++-dev-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64",
        "relates_to_product_reference": "Ubuntu-18"
      },
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        "full_product_name": {
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        },
        "product_reference": "libflac8-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64",
        "relates_to_product_reference": "Ubuntu-18"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "flac-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64 as a component of Ubuntu 18.04",
          "product_id": "Ubuntu-18:flac-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64"
        },
        "product_reference": "flac-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64",
        "relates_to_product_reference": "Ubuntu-18"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libflac++6v5-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64 as a component of Ubuntu 18.04",
          "product_id": "Ubuntu-18:libflac++6v5-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64"
        },
        "product_reference": "libflac++6v5-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64",
        "relates_to_product_reference": "Ubuntu-18"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libflac-dev-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64 as a component of Ubuntu 18.04",
          "product_id": "Ubuntu-18:libflac-dev-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64"
        },
        "product_reference": "libflac-dev-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64",
        "relates_to_product_reference": "Ubuntu-18"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2020-22219",
      "cwe": {
        "id": "CWE-120",
        "name": "Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')"
      },
      "notes": [
        {
          "category": "description",
          "text": "Buffer Overflow vulnerability in function bitwriter_grow_ in flac before 1.4.0 allows remote attackers to run arbitrary code via crafted input to the encoder.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "Ubuntu-18:flac-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64",
          "Ubuntu-18:libflac++-dev-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64",
          "Ubuntu-18:libflac++6v5-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64",
          "Ubuntu-18:libflac-dev-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64",
          "Ubuntu-18:libflac-doc-0:1.3.2-1ubuntu0.1+tuxcare.els1.all",
          "Ubuntu-18:libflac8-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2020-22219"
        },
        {
          "category": "external",
          "summary": "https://github.com/xiph/flac/issues/215",
          "url": "https://github.com/xiph/flac/issues/215"
        },
        {
          "category": "external",
          "summary": "https://lists.debian.org/debian-lts-announce/2023/09/msg00028.html",
          "url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00028.html"
        },
        {
          "category": "external",
          "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZD2AJTU4PCJQP7HPTS2L2ELJWBASCRGD/",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZD2AJTU4PCJQP7HPTS2L2ELJWBASCRGD/"
        },
        {
          "category": "external",
          "summary": "https://www.debian.org/security/2023/dsa-5500",
          "url": "https://www.debian.org/security/2023/dsa-5500"
        }
      ],
      "release_date": "2023-08-22T19:16:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-31T16:24:44.477279Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1788193482",
          "product_ids": [
            "Ubuntu-18:flac-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64",
            "Ubuntu-18:libflac++-dev-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64",
            "Ubuntu-18:libflac++6v5-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64",
            "Ubuntu-18:libflac-dev-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64",
            "Ubuntu-18:libflac-doc-0:1.3.2-1ubuntu0.1+tuxcare.els1.all",
            "Ubuntu-18:libflac8-0:1.3.2-1ubuntu0.1+tuxcare.els1.amd64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1788193482"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    }
  ]
}