libceph: prevent potential out-of-bounds reads in process_message_header()_CVE-2026-43406

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: prevent potential out-of-bounds reads in process_message_header()\n\nIf the message frame is (maliciously) corrupted in a way that the\nlength of the control segment ends up being less than the size of the\nmessage header or a different frame is made to look like a message\nframe, out-of-bounds reads may ensue in process_message_header().\n\nPerform an explicit bounds check before decoding the message header.",
    "published": "2026-05-08T14:21:46.246Z",
    "modified": "2026-05-11T06:34:15.738Z",
    "type": "cve",
    "title": "libceph: prevent potential out-of-bounds reads in process_message_header()",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/76ccf21a12c5f6d6790bc32c7da82446d877b2f4\nhttps://git.kernel.org/stable/c/75582aaa580c11aed4c7731cad6b068b700e7efb\nhttps://git.kernel.org/stable/c/50156622eb0888e62541d715a98584480a1bc7cb\nhttps://git.kernel.org/stable/c/dbd857a9e1e33ea71eaf3e211877027e533770d1\nhttps://git.kernel.org/stable/c/69fe5af33fa3806f398d21c081d73c66e5523bc2\nhttps://git.kernel.org/stable/c/035867ae6f18df0aeedb2a57a5b74091bd4e3fe8\nhttps://git.kernel.org/stable/c/69fb5d91bba44ecf7eb80530b85fa4fb028921d5",
    "id": "CVE-2026-43406",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux cd1a677cad994021b19665ed476aea63f5d54f31\nLinux Linux cd1a677cad994021b19665ed476aea63f5d54f31\nLinux Linux cd1a677cad994021b19665ed476aea63f5d54f31\nLinux Linux cd1a677cad994021b19665ed476aea63f5d54f31\nLinux Linux cd1a677cad994021b19665ed476aea63f5d54f31\nLinux Linux cd1a677cad994021b19665ed476aea63f5d54f31\nLinux Linux cd1a677cad994021b19665ed476aea63f5d54f31\nLinux Linux 5.11",
    "sourceHref": "",
    "cvss": {
        "score": 9.1,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "cd1a677cad994021b19665ed476aea63f5d54f31",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}