Security advisory

{
  "id": "81ea46b0a8e3ef935ee5d9c20a6654e89fa588ef53a37d5e4b497bfcc4a31e88",
  "url": "https://osv.dev/vulnerability/CVE-2021-3497",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-3497",
    "summary": "GStreamer before 1.18.4 might access already-freed memory in error code paths when demuxing certain malformed Matroska files.",
    "evidence": "osv:CVE-2021-3497",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-3497",
      "aliases": [
        "CVE-2021-3497"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/gstreamer/gstreamer",
              "type": "GIT",
              "events": [
                {
                  "introduced": "2383bf6dedb7912df06a8c4f03aa9f241a7aff6f"
                },
                {
                  "fixed": "b5b2e3b9208f1f93bc5b0244d29dfed157d78293"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gstreamer:gstreamer:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.10.0"
                      },
                      {
                        "fixed": "1.18.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3497.json"
          }
        }
      ],
      "modified": "2026-10-24T10:31:04.999961821Z",
      "provider": "osv",
      "references": [
        "https://gstreamer.freedesktop.org/security/sa-2021-0002.html",
        "https://lists.debian.org/debian-lts-announce/2021/04/msg00027.html",
        "https://security.gentoo.org/glsa/202208-31",
        "https://www.debian.org/security/2021/dsa-4900",
        "https://bugzilla.redhat.com/show_bug.cgi?id=1945339"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  },
                  {
                    "introduced": "10.0"
                  },
                  {
                    "last_affected": "10.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "redhat:enterprise_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "7.0"
                  },
                  {
                    "last_affected": "7.0"
                  },
                  {
                    "introduced": "8.0"
                  },
                  {
                    "last_affected": "8.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-3497",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 440657,
  "published_at": "2021-04-19T21:15:13.113+00:00"
}