{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-107837",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-08T22:34:49.289Z",
        "datePublished": "2026-10-09T17:53:47.707Z",
        "dateUpdated": "2026-10-09T17:53:47.707Z"
    },
    "containers": {
        "cna": {
            "title": "RIOT: Out-of-Bounds Read in RIOT OS 6LoWPAN SFF Fragment Handling",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-125",
                            "lang": "en",
                            "description": "CWE-125: Out-of-bounds Read",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 8.2,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-m8mc-q4p7-p8j3",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-m8mc-q4p7-p8j3"
                },
                {
                    "name": "https://github.com/RIOT-OS/RIOT/pull/22504",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/RIOT-OS/RIOT/pull/22504"
                },
                {
                    "name": "https://github.com/RIOT-OS/RIOT/commit/0cae205cd1d110e0b8fce094714598322d56ce2d",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/RIOT-OS/RIOT/commit/0cae205cd1d110e0b8fce094714598322d56ce2d"
                }
            ],
            "affected": [
                {
                    "vendor": "RIOT-OS",
                    "product": "RIOT",
                    "versions": [
                        {
                            "version": "<= 2026.07",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-09T17:53:47.707Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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."
                }
            ],
            "source": {
                "advisory": "GHSA-m8mc-q4p7-p8j3",
                "discovery": "UNKNOWN"
            }
        }
    }
}