Bluetooth: hci_event: fix potential UAF in SSP passkey handlers_CVE-2026-46056

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: fix potential UAF in SSP passkey handlers\n\nhci_conn lookup and field access must be covered by hdev lock in\nhci_user_passkey_notify_evt() and hci_keypress_notify_evt(), otherwise\nthe connection can be freed concurrently.\n\nExtend the hci_dev_lock critical section to cover all conn usage in both\nhandlers.\n\nKeep the existing keypress notification behavior unchanged by routing\nthe early exits through a common unlock path.",
    "published": "2026-05-27T12:57:15.150Z",
    "modified": "2026-05-30T10:47:06.544Z",
    "type": "cve",
    "title": "Bluetooth: hci_event: fix potential UAF in SSP passkey handlers",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/204028af77a265e31ceb4ba7f643349a3cca72b2\nhttps://git.kernel.org/stable/c/01a6431766c35dfedb86e0cb5d3fc80c6d604a47\nhttps://git.kernel.org/stable/c/e08d75753db17aa943d7622f09d9c217b5bfd3b8\nhttps://git.kernel.org/stable/c/8c6443bb9257b780986fb67ec08565bf48ecb8d7\nhttps://git.kernel.org/stable/c/85fa3512048793076eef658f66489112dcc91993",
    "id": "CVE-2026-46056",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 92a25256f142d55e25f9959441cea6ddeabae57e\nLinux Linux 92a25256f142d55e25f9959441cea6ddeabae57e\nLinux Linux 92a25256f142d55e25f9959441cea6ddeabae57e\nLinux Linux 92a25256f142d55e25f9959441cea6ddeabae57e\nLinux Linux 92a25256f142d55e25f9959441cea6ddeabae57e\nLinux Linux 3.7",
    "sourceHref": "",
    "cvss": {
        "score": 8.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
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        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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            "baseScore": 0,
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            "privilegesRequired": "",
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            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "92a25256f142d55e25f9959441cea6ddeabae57e",
    "vendor": "Linux",
    "ai_description": "",
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    "ai_score": 0
}