Fast-DDS: Unbounded GAP range triggers OOM DoS under RELIABLE QoS_CVE-2025-64438

{
    "lastseen": "",
    "description": "Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group\n). Prior to versions 3.4.1, 3.3.1, and 2.6.11, a remotely triggerable Out-of-Memory (OOM) denial-of-service exists in Fast\n-DDS when processing RTPS GAP submessages under RELIABLE QoS. By sending a tiny GAP packet with a huge gap range (`gapList\n.base - gapStart`), an attacker drives `StatefulReader::processGapMsg()` into an unbounded loop that inserts millions of s\nequence numbers into `WriterProxy::changes_received_` (`std::set`), causing multi-GB heap growth and process termination. \nNo authentication is required beyond network reachability to the reader on the DDS domain. In environments without an RSS \nlimit (non-ASan / unlimited), memory consumption was observed to rise to ~64 GB. Versions 3.4.1, 3.3.1, and 2.6.11 patch t\nhe issue.",
    "published": "2026-02-03T19:32:22.265Z",
    "modified": "2026-02-03T19:32:22.265Z",
    "type": "cve",
    "title": "Fast-DDS: Unbounded GAP range triggers OOM DoS under RELIABLE QoS",
    "source": "GitHub_M",
    "references": "https://security-tracker.debian.org/tracker/CVE-2025-64438\nhttps://github.com/eProsima/Fast-DDS/commit/0b0cb308eaeeb2175694aa0a0a723106824ce9a7\nhttps://github.com/eProsima/Fast-DDS/commit/71da01b4aea4d937558984f2cf0089f5ba3c871f\nhttps://github.com/eProsima/Fast-DDS/commit/8ca016134dac20b6e30e42b7b73466ef7cdbc213",
    "id": "CVE-2025-64438",
    "bulletinFamily": "",
    "cwe": [
        "CWE-835"
    ],
    "cvelist": null,
    "sourceData": "eProsima Fast-DDS 3.4.0\neProsima Fast-DDS 3.0.0\neProsima Fast-DDS 0",
    "sourceHref": "",
    "cvss": {
        "score": 1.7,
        "severity": "LOW",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Fast-DDS",
    "version": "3.4.0",
    "vendor": "eProsima",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}