CVE-2026-64406

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> Bluetooth: fix UAF in bt_accept_dequeue()<br /> <br /> bt_accept_get() takes a temporary reference before dropping the accept<br /> queue lock. bt_accept_dequeue() currently drops that reference before<br /> bt_accept_unlink(), leaving only the queue reference.<br /> <br /> bt_accept_unlink() drops the queue reference. The subsequent<br /> sock_hold() therefore accesses freed memory if it was the final<br /> reference, as observed by KASAN during listening L2CAP socket cleanup.<br /> <br /> Retain the temporary queue-walk reference through unlink and hand it to<br /> the caller on success. Drop it explicitly on the closed and<br /> not-yet-connected paths.