PT-2026-51711 · Linux · Linux

Published 2026-06-24 · Updated 2026-06-24 · CVE-2026-52918

NVD

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.

Related Identifiers

CVE-2026-52918

Affected Products

Linux

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-52918 · Security Note
• https://git.kernel.org/stable/c/85f8674cae82053f1e6bab295f6a8422cca14db5 · Note
• https://git.kernel.org/stable/c/4ec17782fd186f901a7329605d11048b085b945a · Note
• https://git.kernel.org/stable/c/8b4c412e001b0c670eb937beab491af974da55b3 · Note
• https://git.kernel.org/stable/c/be43e6b4043113c3b3cf887c3c8350f67140274c · Note
• https://git.kernel.org/stable/c/d9ce4de05df2385c19e2c7d12f529144e1a44af1 · Note
• https://git.kernel.org/stable/c/41c8c1c7923e86e0eb59cfb4279349112756a336 · Note
• https://git.kernel.org/stable/c/a218bf69eb51fefe59a3976fa8925261141f681c · Note
• https://git.kernel.org/stable/c/e83f5e24da741fa9405aeeff00b08c5ee7c37b88 · Note