net: nfc: nci: Fix parameter validation for packet data_CVE-2026-43291

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: nfc: nci: Fix parameter validation for packet data\n\nSince commit 9c328f54741b (\"net: nfc: nci: Add parameter validation for\npacket data\") communication with nci nfc chips is not working any more.\n\nThe mentioned commit tries to fix access of uninitialized data, but\nfailed to understand that in some cases the data packet is of variable\nlength and can therefore not be compared to the maximum packet length\ngiven by the sizeof(struct).",
    "published": "2026-05-08T13:11:15.312Z",
    "modified": "2026-05-11T06:32:57.607Z",
    "type": "cve",
    "title": "net: nfc: nci: Fix parameter validation for packet data",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/a24a8a582da4426b2042e510a1080df84083b51d\nhttps://git.kernel.org/stable/c/f5218426f765eee22e178df9c126d974792fb6a5\nhttps://git.kernel.org/stable/c/ad058a4317db7fdb3f09caa6ed536d24a62ce6a0\nhttps://git.kernel.org/stable/c/3b91160e9a91b5a2662875417dc42dc5b0bf03ea\nhttps://git.kernel.org/stable/c/c692db813a7e3b7c3c17d6e9a3ad2a018bf1142b\nhttps://git.kernel.org/stable/c/498fc5d0d650c77e87fcc73808d4f43240c21805\nhttps://git.kernel.org/stable/c/571dcbeb8e635182bb825ae758399831805693c2",
    "id": "CVE-2026-43291",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 8fcc7315a10a84264e55bb65ede10f0af20a983f\nLinux Linux bfdda0123dde406dbff62e7e9136037e97998a15\nLinux Linux 0ba68bea1e356f466ad29449938bea12f5f3711f\nLinux Linux 74837bca0748763a77f77db47a0bdbe63b347628\nLinux Linux 9c328f54741bd5465ca1dc717c84c04242fac2e1\nLinux Linux 9c328f54741bd5465ca1dc717c84c04242fac2e1\nLinux Linux 9c328f54741bd5465ca1dc717c84c04242fac2e1\nLinux Linux c395d1e548cc68e84584ffa2e3ca9796a78bf7b9\nLinux Linux 6.18",
    "sourceHref": "",
    "cvss": {
        "score": 8.3,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/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,
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            "privilegesRequired": "",
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            "confidentialityImpact": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "8fcc7315a10a84264e55bb65ede10f0af20a983f",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
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    "ai_score": 0
}