CVE-2026-64408

HighCVSS 8.8/10Last modified Oct 19, 2026

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

No affected versions have been published.

Timeline

Published
Jul 25, 2026
Last modified
Oct 19, 2026
NVD status
Modified

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CVE-2026-64408: High severity, CVSS 8.8 | Vulnix