Security advisory

{
  "id": "89ee572f61f90da76aafe3197ab5239d540bc46a1d657602a4191002ccca037b",
  "url": "https://osv.dev/vulnerability/CVE-2017-9051",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-9051",
    "summary": "libav before 12.1 is vulnerable to an invalid read of size 1 due to NULL pointer dereferencing in the nsv_read_chunk function in libavformat/nsvdec.c.",
    "evidence": "osv:CVE-2017-9051",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2017-9051",
      "aliases": [
        "CVE-2017-9051"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/libav/libav",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "11cd727fbd603197cb1e49654fce3352d56f8fd8"
                },
                {
                  "fixed": "fe6eea99efac66839052af547426518efd970b24"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:libav:libav:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "12.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "fe6eea99efac66839052af547426518efd970b24"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v12_dev0",
            "v11_beta1",
            "v11_alpha2",
            "v11_alpha1",
            "v10_beta1",
            "v11_dev0",
            "dev14.2",
            "v10_alpha2",
            "v10_alpha1",
            "v9",
            "v9_beta3",
            "v9_beta2",
            "v9_beta1",
            "v0.8",
            "v0.8b2",
            "v0.8b1",
            "v0.7",
            "v0.7rc1",
            "v0.7b2",
            "v0.7b1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-9051.json",
            "vanir_signatures": [
              {
                "id": "CVE-2017-9051-1e586f1c",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "274891497231171138543145085514920405842",
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                    "291767047652134290075725572025369611011"
                  ]
                },
                "source": "https://github.com/libav/libav/commit/fe6eea99efac66839052af547426518efd970b24",
                "target": {
                  "file": "libavformat/nsvdec.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2017-9051-8d9f97f1",
                "digest": {
                  "length": 3684,
                  "function_hash": "131262218544824003360077917658789245651"
                },
                "source": "https://github.com/libav/libav/commit/fe6eea99efac66839052af547426518efd970b24",
                "target": {
                  "file": "libavformat/nsvdec.c",
                  "function": "nsv_read_chunk"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:26:16Z"
          }
        }
      ],
      "modified": "2026-10-20T13:26:16.158848683Z",
      "provider": "osv",
      "references": [
        "https://bugzilla.libav.org/show_bug.cgi?id=1039",
        "https://github.com/libav/libav/commit/fe6eea99efac66839052af547426518efd970b24"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2017-9051",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387672,
  "published_at": "2017-05-18T06:29:00.527+00:00"
}