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8.8 High

CVE-2026-52918 In the Linux kernel, the following vulnerability has been resolved: Bluetooth: serialize accept_q access…

Description

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 and versions

Product Affected versions Fixed in
Linux 7.1 earliest → < 7.1 7.1
Linux 7.0 earliest → < 7.0.11 7.0.11
Linux 6.18 earliest → < 6.18.34 6.18.34
Linux 6.12 earliest → < 6.12.92 6.12.92
Linux 6.6 earliest → < 6.6.142 6.6.142
Linux 6.1 earliest → < 6.1.176 6.1.176
Linux 5.15 earliest → < 5.15.210 5.15.210
Linux 5.10 earliest → < 5.10.259 5.10.259
Linux 2.6.12 No fix stated
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Product Affected versions Fixed in
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Versions not published

References

Timeline

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