{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "2026.07"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0cae205cd1d110e0b8fce094714598322d56ce2d"
            }
          ],
          "repo": "https://github.com/riot-os/riot",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-m8mc-q4p7-p8j3"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107837.json"
  },
  "details": "RIOT is an open-source microcontroller operating system designed for Internet of Things devices and other embedded systems. In 2026.07 and earlier, _receive() in sys/net/gnrc/network_layer/sixlowpan/gnrc_sixlowpan.c can route an undersized packet into SFF fragment handling after only a minimal payload check. The code then interprets the packet as a sixlowpan_frag_t or larger fragment header without verifying that the packet snip contains the required bytes. A remote attacker can send a malformed 6LoWPAN fragment that causes gnrc_sixlowpan_frag_recv() to read beyond the packet buffer, potentially disclosing memory and crashing the network stack. No fixed repository release is available as of this review.",
  "id": "CVE-2026-107837",
  "modified": "2026-10-11T02:30:21.299258378Z",
  "published": "2026-10-09T17:53:47.707Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107837.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-m8mc-q4p7-p8j3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-107837"
    },
    {
      "type": "FIX",
      "url": "https://github.com/RIOT-OS/RIOT/commit/0cae205cd1d110e0b8fce094714598322d56ce2d"
    },
    {
      "type": "FIX",
      "url": "https://github.com/RIOT-OS/RIOT/pull/22504"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "RIOT: Out-of-Bounds Read in RIOT OS 6LoWPAN SFF Fragment Handling"
}