libceph: define and enforce CEPH_MAX_KEY_LEN_CVE-2026-43304

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: define and enforce CEPH_MAX_KEY_LEN\n\nWhen decoding the key, verify that the key material would fit into\na fixed-size buffer in process_auth_done() and generally has a sane\nlength.\n\nThe new CEPH_MAX_KEY_LEN check replaces the existing check for a key\nwith no key material which is a) not universal since CEPH_CRYPTO_NONE\nhas to be excluded and b) doesn't provide much value since a smaller\nthan needed key is just as invalid as no key -- this has to be handled\nelsewhere anyway.",
    "published": "2026-05-08T13:11:24.264Z",
    "modified": "2026-05-11T06:33:03.811Z",
    "type": "cve",
    "title": "libceph: define and enforce CEPH_MAX_KEY_LEN",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/6405e8c680974bb74e2c98d5249fb52c7b12a6c6\nhttps://git.kernel.org/stable/c/8d745d38c88ecbed95f6b2b39857bf89f35a3244\nhttps://git.kernel.org/stable/c/e1dc45d97975f9db65694d234fbddf1915176e16\nhttps://git.kernel.org/stable/c/1b275bd49e58752efb83767a5d1aed41356c5e64\nhttps://git.kernel.org/stable/c/c1a0f5f1e5e7e98c36a362ec3d1fcfd9932931ed\nhttps://git.kernel.org/stable/c/d82467c07b03a27c3c5469b62bb3b726305a80bb\nhttps://git.kernel.org/stable/c/ac431d597a9bdfc2ba6b314813f29a6ef2b4a3bf",
    "id": "CVE-2026-43304",
    "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": 9.8,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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
}