CVE-2026-53072 (GCVE-0-2026-53072)
Vulnerability from cvelistv5
Published
2026-06-24 16:30
Modified
2026-10-19 19:47
Severity ?
8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER When protocol sets HCI_PROTO_DEFER, hci_conn_request_evt() calls hci_connect_cfm(conn) without hdev->lock. Generally hci_connect_cfm() assumes it is held, and if conn is deleted concurrently -> UAF. Only SCO and ISO set HCI_PROTO_DEFER and only for defer setup listen, and HCI_EV_CONN_REQUEST is not generated for ISO. In the non-deferred listening socket code paths, hci_connect_cfm(conn) is called with hdev->lock held. Fix by holding the lock.
References
Impacted products
Vendor Product Version
Linux Linux Version: 70c464256310e1c3716099b9d02ece4169272f73
Version: 70c464256310e1c3716099b9d02ece4169272f73
Version: 70c464256310e1c3716099b9d02ece4169272f73
Version: 70c464256310e1c3716099b9d02ece4169272f73
Version: 70c464256310e1c3716099b9d02ece4169272f73
Version: 70c464256310e1c3716099b9d02ece4169272f73
Version: 70c464256310e1c3716099b9d02ece4169272f73
Version: 70c464256310e1c3716099b9d02ece4169272f73
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