Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp_CVE-2026-53071

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp\n\nl2cap_ecred_reconf_rsp() calls l2cap_chan_del() without holding\nl2cap_chan_lock(). Every other l2cap_chan_del() caller in the file\nacquires the lock first. A remote BLE device can send a crafted\nL2CAP ECRED reconfiguration response to corrupt the channel list\nwhile another thread is iterating it.\n\nAdd l2cap_chan_hold() and l2cap_chan_lock() before l2cap_chan_del(),\nand l2cap_chan_unlock() and l2cap_chan_put() after, matching the\npattern used in l2cap_ecred_conn_rsp() and l2cap_conn_del().",
    "published": "2026-06-24T16:30:12.694Z",
    "modified": "2026-06-28T06:38:56.987Z",
    "type": "cve",
    "title": "Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/96dca51715d86559ed6ed8028e5445cecb80f3ae\nhttps://git.kernel.org/stable/c/330b20ec97916961ee0e6c29c06bc0fa7c96e64c\nhttps://git.kernel.org/stable/c/0ccd75c51f620374086f359e906917676e699a1c\nhttps://git.kernel.org/stable/c/77a853aec710b2fdf41fa298ea3cbc9a4358f917\nhttps://git.kernel.org/stable/c/fe1188abdae9b7a8199dcdfcf9244d5e5d61eb14\nhttps://git.kernel.org/stable/c/dc89961b76f12aff47124c1df4bdb32a080f4d0c\nhttps://git.kernel.org/stable/c/5501d055a1ce3c747141e3955ba8cf034d193f3e\nhttps://git.kernel.org/stable/c/42776497cdbc9a665b384a6dcb85f0d4bd927eab",
    "id": "CVE-2026-53071",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 15f02b91056253e8cdc592888f431da0731337b8\nLinux Linux 15f02b91056253e8cdc592888f431da0731337b8\nLinux Linux 15f02b91056253e8cdc592888f431da0731337b8\nLinux Linux 15f02b91056253e8cdc592888f431da0731337b8\nLinux Linux 15f02b91056253e8cdc592888f431da0731337b8\nLinux Linux 15f02b91056253e8cdc592888f431da0731337b8\nLinux Linux 15f02b91056253e8cdc592888f431da0731337b8\nLinux Linux 15f02b91056253e8cdc592888f431da0731337b8\nLinux Linux 5.7",
    "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": {
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        "baseScore": 0,
        "baseSeverity": "",
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        "attackComplexity": "",
        "privilegesRequired": "",
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        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "15f02b91056253e8cdc592888f431da0731337b8",
    "vendor": "Linux",
    "ai_description": "",
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    "ai_score": 0
}