{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "4.9"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "c20b12cd2db707d6c07918f8b26cfeb52cf298ca"
            }
          ],
          "repo": "https://github.com/contiki-ng/contiki-ng",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-jp4p-fq85-jch2"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/50xxx/CVE-2023-50926.json"
  },
  "details": "Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. An out-of-bounds read can be caused by an incoming DIO message when using the RPL-Lite implementation in the Contiki-NG operating system. More specifically, the prefix information of the DIO message contains a field that specifies the length of an IPv6 address prefix. The value of this field is not validated, which means that an attacker can set a value that is longer than the maximum prefix length. Subsequently, a memcmp function call that compares different prefixes can be called with a length argument that surpasses the boundary of the array allocated for the prefix, causing an out-of-bounds read. The problem has been patched in the \"develop\" branch of Contiki-NG, and is expected to be included in the next release. Users are advised to update as soon as they are able to or to manually apply the changes in Contiki-NG pull request #2721.",
  "id": "CVE-2023-50926",
  "modified": "2026-04-01T23:10:05.555048371Z",
  "published": "2024-02-14T19:28:11.556Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/50xxx/CVE-2023-50926.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-jp4p-fq85-jch2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-50926"
    },
    {
      "type": "FIX",
      "url": "https://github.com/contiki-ng/contiki-ng/pull/2721"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Unvalidated DIO prefix info length in RPL-Lite in Contiki-NG"
}