Security advisory

{
  "id": "bbdb639d43773c587ba9d977179647721a7bd086ab2aeeae259b8efe0719c4e9",
  "url": "https://osv.dev/vulnerability/CVE-2021-40812",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-40812",
    "summary": "The GD Graphics Library (aka LibGD) through 2.3.2 has an out-of-bounds read because of the lack of certain gdGetBuf and gdPutBuf return value checks.",
    "evidence": "osv:CVE-2021-40812",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-40812",
      "aliases": [
        "CVE-2021-40812"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/libgd/libgd",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "2e40f55bfb460fc9d8cbcd290a0c9eb908d5af7e"
                },
                {
                  "fixed": "6f5136821be86e7068fcdf651ae9420b5d42e9a9"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:libgd:libgd:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.3.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "6f5136821be86e7068fcdf651ae9420b5d42e9a9"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "gd-2.3.2",
            "gd-2.3.1",
            "gd-2.3.0",
            "gd-2.1.1",
            "gd-2.1.0",
            "gd-2.1.0-rc1",
            "gd-2.1.0-alpha1",
            "GD_2_0_34RC1",
            "GD_2_0_33",
            "GD_2_0_32",
            "GD_2_0_31",
            "GD_2_0_30",
            "GD_2_0_29",
            "GD_2_0_28",
            "GD_2_0_27",
            "GD_2_0_26",
            "GD_2_0_25",
            "GD_2_0_24",
            "GD_2_0_23",
            "GD_2_0_22",
            "GD_2_0_21",
            "GD_2_0_20",
            "GD_2_0_19",
            "GD_2_0_18",
            "GD_2_0_17",
            "GD_2_0_15",
            "GD_2_0_14",
            "GD_2_0_13",
            "GD_2_0_12",
            "GD_2_0_11",
            "GD_2_0_10",
            "GD_2_0_9",
            "GD_2_0_8",
            "GD_2_0_7",
            "GD_2_0_6",
            "GD_2_0_5",
            "GD_2_0_4",
            "GD_2_0_3",
            "GD_2_0_2",
            "GD_2_0_1",
            "GD_2_0_0",
            "GD_1_8_4",
            "GD_1_8_3",
            "GD_1_8_1",
            "GD_1_8_0",
            "GD_1_7_3",
            "GD_1_7_2",
            "GD_1_7_1",
            "GD_1_7_0",
            "GD_1_6_3",
            "GD_1_6_2",
            "GD_1_6_1",
            "GD_1_6_0",
            "GD_1_5_0",
            "GD_1_4_0",
            "GD_1_3_0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-40812.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:56.473865542Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2024/04/msg00003.html",
        "https://github.com/libgd/libgd/commit/6f5136821be86e7068fcdf651ae9420b5d42e9a9",
        "https://github.com/libgd/libgd/issues/750#issuecomment-914872385"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-40812",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386497,
  "published_at": "2021-09-08T21:15:14.083+00:00"
}