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high8.8

CVE-2026-52918

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: serialize accept_q access bt_sock_poll() walks the accept queue without synchron…

Impact

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: serialize accept_q access bt_sock_poll() walks the accept queue without synchronization, while child teardown can unlink the same socket and drop its last reference. The unsynchronized accept queue walk has existed since the initial Bluetooth import. Protect accept_q with a dedicated lock for queue updates and polling. Also rework bt_accept_dequeue() to take temporary child references under the queue lock before dropping it and locking the child socket.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 2.6.12.1 before 5.10.259
from 5.11 before 5.15.210
from 5.16 before 6.1.176
from 6.2 before 6.6.142
from 6.7 before 6.12.92
from 6.13 before 6.18.34

Weakness classification

CWE-362

References