CVE-2026-64408

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: pin L2CAP connection during netdev registration bnep_add_connection() reads the L2CAP connection without holding the channel lock, then passes its HCI device to register_netdev(). Controller teardown can clear and release that connection concurrently, leaving the network device registration path to dereference a freed parent device. Take a reference to the L2CAP connection while holding the channel lock. Retain it until register_netdev() has taken the parent device reference.

References

• https://git.kernel.org/stable/c/390b5db3ff8745187f094c4e915663b7b1f98944
• https://git.kernel.org/stable/c/46a88784c4c9b96954dd86f747ce93f65efa1302
• https://git.kernel.org/stable/c/551ae773ec64045b4e72099132654887e0270bcc
• https://git.kernel.org/stable/c/563a8573047182f550b1e1e030615755cd8c41da
• https://git.kernel.org/stable/c/a6b22dbd80926556290ad2243be25218d6956a19