Integer overflow in table parsing extension leads to heap memory corruption

{
  "id": "4eb7fa395ca3ad2dd529139b2f548a6f2bc134b42691169b82ce79675bf775e9",
  "url": "https://osv.dev/vulnerability/CVE-2022-24724",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Integer overflow in table parsing extension leads to heap memory corruption",
    "summary": "cmark-gfm is GitHub's extended version of the C reference implementation of CommonMark. Prior to versions 0.29.0.gfm.3 and 0.28.3.gfm.21, an integer overflow in cmark-gfm's table row parsing `table.c:row_from_string` may lead to heap memory corruption when parsing tables who's marker rows contain more than UINT16_MAX columns. The impact of this heap corruption ranges from Information Leak to Arbitrary Code Execution depending on how and where `cmark-gfm` is used. If `cmark-gfm` is used for rendering remote user controlled markdown, this vulnerability may lead to Remote Code Execution (RCE) in applications employing affected versions of the `cmark-gfm` library. This vulnerability has been patched in the following cmark-gfm versions 0.29.0.gfm.3 and 0.28.3.gfm.21. A workaround is available. The vulnerability exists in the table markdown extensions of cmark-gfm. Disabling the table extension will prevent this vulnerability from being triggered.",
    "evidence": "osv:CVE-2022-24724",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2022-24724",
      "aliases": [
        "CVE-2022-24724",
        "GHSA-mc3g-88wq-6f4x"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/github/cmark-gfm",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6fc5672293c1052e2fb7ab65a92a41495cb6426a"
                },
                {
                  "fixed": "cf7577d2f74289cb83de0a652afc1a8b08a37036"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:github:cmark-gfm:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.28.3.gfm.21"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:github:cmark-gfm:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.29.0.gfm.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.28.3.gfm.20",
            "0.29.0.gfm.2",
            "0.29.0.gfm.1",
            "0.29.0.gfm.0",
            "0.28.3.gfm.19",
            "0.28.3.gfm.18",
            "0.28.3.gfm.17",
            "0.28.3.gfm.16",
            "0.28.3.gfm.15",
            "0.28.3.gfm.14",
            "0.28.3.gfm.13",
            "0.28.3.gfm.12",
            "0.28.0.gfm.11",
            "0.28.0.gfm.10",
            "0.28.0.gfm.9",
            "0.28.0.gfm.8",
            "0.28.0.gfm.7",
            "0.28.0.gfm.6",
            "0.28.0.gfm.5",
            "0.27.1.gfm.4",
            "0.27.1.gfm.3",
            "0.27.1.gfm.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-24724.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.995828366Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/24xxx/CVE-2022-24724.json",
        "https://github.com/github/cmark-gfm/security/advisories/GHSA-mc3g-88wq-6f4x",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5CYUU662VO6CCXQKVZVOHXX3RGIF2DLQ/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F7V3HAM5H6YFJG2QFEXACZR3XVWFTXTC/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KH4UQA6VWVZU5EW3HNEAB7D7BTCNJSJ2/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RSKUOJ2VAYGTJXPDE2RRPMNLVVMKCI77/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TJBFIJEHJZEEDG6MO4MQHZYKUXELH77O/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z55K6VNVKO2G5SNKRCQ2KDG5SKTX5PVV/",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-24724"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-190"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/24xxx/CVE-2022-24724.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-24724",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 515046,
  "published_at": "2022-03-03T19:35:09+00:00"
}