Security advisory

{
  "id": "0099179fa0683d050657018ba3cc57b5fd18f3bb6e003e61c84792db487dc83e",
  "url": "https://osv.dev/vulnerability/CVE-2021-27419",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-27419",
    "summary": "uClibc-ng versions prior to 1.0.37 are vulnerable to integer wrap-around in functions malloc-simple. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.",
    "evidence": "osv:CVE-2021-27419",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-27419",
      "aliases": [
        "CVE-2021-27419"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/wbx-github/uclibc-ng",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "ab1dd83bec59c9e65c31efd6e887182948f627be"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:uclibc-ng_project:uclibc-ng:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.0.37"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.0.36",
            "v1.0.35",
            "v1.0.34",
            "v1.0.33",
            "v1.0.32",
            "v1.0.31",
            "v1.0.30",
            "v1.0.29",
            "v1.0.28",
            "v1.0.27",
            "v1.0.26",
            "v1.0.25",
            "v1.0.24",
            "v1.0.23",
            "v1.0.22",
            "v1.0.21",
            "v1.0.20",
            "v1.0.19",
            "v1.0.18",
            "v1.0.17",
            "v1.0.16",
            "v1.0.15",
            "v1.0.14",
            "v1.0.13",
            "v1.0.12",
            "v1.0.11",
            "v1.0.10",
            "v1.0.9",
            "v1.0.8",
            "v1.0.7",
            "v1.0.6",
            "v1.0.5",
            "v1.0.4",
            "v1.0.2",
            "v1.0.1",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-27419.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:54.475361179Z",
      "provider": "osv",
      "references": [
        "https://downloads.uclibc-ng.org/releases/",
        "https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-27419",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 438172,
  "published_at": "2022-05-03T21:15:08.243+00:00"
}