nfc: rawsock: cancel tx_work before socket teardown_CVE-2026-23372

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: rawsock: cancel tx_work before socket teardown\n\nIn rawsock_release(), cancel any pending tx_work and purge the write\nqueue before orphaning the socket.  rawsock_tx_work runs on the system\nworkqueue and calls nfc_data_exchange which dereferences the NCI\ndevice.  Without synchronization, tx_work can race with socket and\ndevice teardown when a process is killed (e.g. by SIGKILL), leading\nto use-after-free or leaked references.\n\nSet SEND_SHUTDOWN first so that if tx_work is already running it will\nsee the flag and skip transmitting, then use cancel_work_sync to wait\nfor any in-progress execution to finish, and finally purge any\nremaining queued skbs.",
    "published": "2026-03-25T10:27:53.308Z",
    "modified": "2026-04-02T14:44:24.404Z",
    "type": "cve",
    "title": "nfc: rawsock: cancel tx_work before socket teardown",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/3ae592ed91bb4b6b51df256b51045c13d2656049\nhttps://git.kernel.org/stable/c/722a28b635ec281bb08a23885223526d8e7d6526\nhttps://git.kernel.org/stable/c/78141b8832e16d80d09cbefb4258612db0777a24\nhttps://git.kernel.org/stable/c/edc988613def90c5b558e025b1b423f48007be06\nhttps://git.kernel.org/stable/c/da4515fc8263c5933ed605e396af91079806dc45\nhttps://git.kernel.org/stable/c/d793458c45df2aed498d7f74145eab7ee22d25aa",
    "id": "CVE-2026-23372",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 23b7869c0fd08d73c9f83a2db88a13312d6198bb\nLinux Linux 23b7869c0fd08d73c9f83a2db88a13312d6198bb\nLinux Linux 23b7869c0fd08d73c9f83a2db88a13312d6198bb\nLinux Linux 23b7869c0fd08d73c9f83a2db88a13312d6198bb\nLinux Linux 23b7869c0fd08d73c9f83a2db88a13312d6198bb\nLinux Linux 23b7869c0fd08d73c9f83a2db88a13312d6198bb\nLinux Linux 3.1",
    "sourceHref": "",
    "cvss": {
        "score": 7.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/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": "",
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            "confidentialityImpact": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}