Security advisory

{
  "id": "01379664e43cc5d137b4bfdcfd644dbecd81c00c4d9c4a4755931949a5ce9f85",
  "url": "https://osv.dev/vulnerability/CVE-2019-17543",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-17543",
    "summary": "LZ4 before 1.9.2 has a heap-based buffer overflow in LZ4_write32 (related to LZ4_compress_destSize), affecting applications that call LZ4_compress_fast with a large input. (This issue can also lead to data corruption.) NOTE: the vendor states \"only a few specific / uncommon usages of the API are at risk.\"",
    "evidence": "osv:CVE-2019-17543",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-17543",
      "aliases": [
        "CVE-2019-17543"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/lz4/lz4",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "fdf2ef5809ca875c454510610764d9125ef2ebbd"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:lz4_project:lz4:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.9.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.8.1.2",
            "v1.7.4",
            "v1.7.3",
            "rc129v0",
            "r129",
            "r128",
            "r127",
            "r126",
            "r125",
            "r124",
            "r123",
            "r122",
            "r121",
            "r120",
            "r119",
            "r118",
            "r117"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-17543.json",
            "vanir_signatures": [
              {
                "id": "CVE-2019-17543-b1728100",
                "digest": {
                  "length": 6841,
                  "function_hash": "61011784323741544421519885770648292192"
                },
                "source": "https://github.com/lz4/lz4/commit/fdf2ef5809ca875c454510610764d9125ef2ebbd",
                "target": {
                  "file": "tests/frametest.c",
                  "function": "fuzzerTests"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2019-17543-f2e73d94",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "325100058228336016223022397709697290259",
                    "200105775490831143229869207908691188226",
                    "165779088698909068794914726885539428532",
                    "83614538809166404914961511938413066878"
                  ]
                },
                "source": "https://github.com/lz4/lz4/commit/fdf2ef5809ca875c454510610764d9125ef2ebbd",
                "target": {
                  "file": "tests/frametest.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:45:09Z"
          }
        }
      ],
      "modified": "2026-10-20T13:45:09.712534456Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-398330.html",
        "https://lists.apache.org/thread.html/25015588b770d67470b7ba7ea49a305d6735dd7f00eabe7d50ec1e17%40%3Cissues.arrow.apache.org%3E",
        "https://lists.apache.org/thread.html/543302d55e2d2da4311994e9b0debdc676bf3fd05e1a2be3407aa2d6%40%3Cissues.arrow.apache.org%3E",
        "https://lists.apache.org/thread.html/793012683dc0fa6819b7c2560e6cf990811014c40c7d75412099c357%40%3Cissues.arrow.apache.org%3E",
        "https://lists.apache.org/thread.html/9ff0606d16be2ab6a81619e1c9e23c3e251756638e36272c8c8b7fa3%40%3Cissues.arrow.apache.org%3E",
        "https://lists.apache.org/thread.html/f0038c4fab2ee25aee849ebeff6b33b3aa89e07ccfb06b5c87b36316%40%3Cissues.arrow.apache.org%3E",
        "https://lists.apache.org/thread.html/f506bc371d4a068d5d84d7361293568f61167d3a1c3e91f0def2d7d3%40%3Cdev.arrow.apache.org%3E",
        "https://lists.apache.org/thread.html/r0fb226357e7988a241b06b93bab065bcea2eb38658b382e485960e26%40%3Cissues.kudu.apache.org%3E",
        "https://lists.apache.org/thread.html/r4068ba81066792f2b4d208b39c4c4713c5d4c79bd8cb6c1904af5720%40%3Cissues.kudu.apache.org%3E",
        "https://lists.apache.org/thread.html/r7bc72200f94298bc9a0e35637f388deb53467ca4b2e2ad1ff66d8960%40%3Cissues.kudu.apache.org%3E",
        "https://www.oracle.com//security-alerts/cpujul2021.html",
        "https://www.oracle.com/security-alerts/cpuoct2020.html",
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15941",
        "https://github.com/lz4/lz4/compare/v1.9.1...v1.9.2",
        "https://github.com/lz4/lz4/issues/801",
        "https://security.netapp.com/advisory/ntap-20210723-0001/",
        "https://github.com/lz4/lz4/pull/756",
        "https://github.com/lz4/lz4/pull/760"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-17543",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388074,
  "published_at": "2019-10-14T02:15:10.873+00:00"
}