CVE-2026-64408 — Bluetooth: bnep: pin L2CAP connection during netdev registration
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: pin L2CAP connection during netdev registration bnep_add_connection() reads the L2CAP conn…
Published: 2026-07-25 · CVSS: 8.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7