Suricata DCERPC: unbounded fragment buffering leads to memory exhaustion_CVE-2026-22258

{
    "lastseen": "",
    "description": "Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, crafted DCERPC traffic can cause Suricata to expand a buffer w/o limits, leading to memory exhaustion and the process getting killed. While reported for DCERPC over UDP, it is believed that DCERPC over TCP and SMB are also vulnerable. DCERPC/TCP in the default configuration should not be vulnerable as the default stream depth is limited to 1MiB. Versions 8.0.3 and 7.0.14 contain a patch. Some workarounds are available. For DCERPC/UDP, disable the parser. For DCERPC/TCP, the `stream.reassembly.depth` setting will limit the amount of data that can be buffered. For DCERPC/SMB, the `stream.reassembly.depth` can be used as well, but is set to unlimited by default. Imposing a limit here may lead to loss of visibility in SMB.",
    "published": "2026-01-27T16:17:29.903Z",
    "modified": "2026-01-27T16:17:29.903Z",
    "type": "cve",
    "title": "Suricata DCERPC: unbounded fragment buffering leads to memory exhaustion",
    "source": "GitHub_M",
    "references": "https://github.com/OISF/suricata/security/advisories/GHSA-289c-h599-3xcx\nhttps://github.com/OISF/suricata/commit/39d8c302af3422a096b75474a4f295a754ec6a74\nhttps://github.com/OISF/suricata/commit/f82a388d0283725cb76782cf64e8341cab370830\nhttps://redmine.openinfosecfoundation.org/issues/8182",
    "id": "CVE-2026-22258",
    "bulletinFamily": "",
    "cwe": [
        "CWE-400",
        "CWE-770"
    ],
    "cvelist": null,
    "sourceData": "OISF suricata < 7.0.14\nOISF suricata >= 8.0.0, < 8.0.3",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "suricata",
    "version": "< 7.0.14",
    "vendor": "OISF",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}