{
    "id": "CVE-2023-52440",
    "published": "2024-02-21 08:15:45",
    "last_modified": "2026-08-15 13:17:40",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-119",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix slub overflow in ksmbd_decode_ntlmssp_auth_blob()\n\nIf authblob->SessionKey.Length is bigger than session key\nsize(CIFS_KEY_SIZE), slub overflow can happen in key exchange codes.\ncifs_arc4_crypt copy to session key array from SessionKey from client.",
    "epss_score": "0.21909",
    "epss_percentile": "0.97588",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-03 18:17:41",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 21.9% — above the 10% action threshold."
    },
    "products": [
        {
            "vendor": "linux",
            "product": "linux_kernel"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://git.kernel.org/stable/c/30fd6521b2fbd9b767e438e31945e5ea3e3a2fba",
        "https://git.kernel.org/stable/c/4b081ce0d830b684fdf967abc3696d1261387254",
        "https://git.kernel.org/stable/c/7f1d6cb0eb6af3a8088dc24b7ddee9a9711538c4",
        "https://git.kernel.org/stable/c/bd554ed4fdc3d38404a1c43d428432577573e809",
        "https://git.kernel.org/stable/c/ecd7e1c562cb08e41957fcd4b0e404de5ab38e20",
        "https://git.kernel.org/stable/c/30fd6521b2fbd9b767e438e31945e5ea3e3a2fba",
        "https://git.kernel.org/stable/c/4b081ce0d830b684fdf967abc3696d1261387254",
        "https://git.kernel.org/stable/c/7f1d6cb0eb6af3a8088dc24b7ddee9a9711538c4",
        "https://git.kernel.org/stable/c/bd554ed4fdc3d38404a1c43d428432577573e809",
        "https://git.kernel.org/stable/c/ecd7e1c562cb08e41957fcd4b0e404de5ab38e20"
    ]
}