Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt_CVE-2026-43018

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt\n\nhci_conn lookup and field access must be covered by hdev lock in\nhci_le_remote_conn_param_req_evt, otherwise it's possible it is freed\nconcurrently.\n\nExtend the hci_dev_lock critical section to cover all conn usage.",
    "published": "2026-05-01T14:15:22.308Z",
    "modified": "2026-05-03T05:46:05.696Z",
    "type": "cve",
    "title": "Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/59eecf0ffde15670e6a5e10c47be67f73d843b20\nhttps://git.kernel.org/stable/c/5fb69e1eeea9d6cba80517e9f058b56b34bc3a81\nhttps://git.kernel.org/stable/c/7cadb03be37e761130edb153544fe0770a842b19\nhttps://git.kernel.org/stable/c/1d0bdbfe3e91c11f0a704c52443a9446a10d699c\nhttps://git.kernel.org/stable/c/ea3cd36d7382d5f8309df04c275d20df139ed42c\nhttps://git.kernel.org/stable/c/b255531b27da336571411248c2a72a350662bd09",
    "id": "CVE-2026-43018",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 95118dd4edfec950898a00180c6f998df0a6406d\nLinux Linux 95118dd4edfec950898a00180c6f998df0a6406d\nLinux Linux 95118dd4edfec950898a00180c6f998df0a6406d\nLinux Linux 95118dd4edfec950898a00180c6f998df0a6406d\nLinux Linux 95118dd4edfec950898a00180c6f998df0a6406d\nLinux Linux 95118dd4edfec950898a00180c6f998df0a6406d\nLinux Linux 5.17",
    "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": "",
        "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": "95118dd4edfec950898a00180c6f998df0a6406d, 5.17",
    "vendor": "Linux",
    "ai_description": "Potential Use-After-Free vulnerability in the Bluetooth hci_event handling",
    "ai_severity": "High",
    "ai_vendor": "Linux",
    "ai_product": "Linux Kernel",
    "ai_version": "95118dd4edfec950898a00180c6f998df0a6406d, 5.17",
    "ai_score": 8.8
}