CVE-2026-64406: Bluetooth: fix UAF in bt_accept_dequeue()
Bluetooth: fix UAF in btacceptdequeue()
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.145.2-1 - Compensating control
Fix bt_accept_dequeue() to retain the temporary queue-walk reference through bt_accept_unlink(), hand that reference to the caller on successful dequeue, and explicitly drop it on closed and not-yet-connected paths.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-64406?
The severity of CVE-2026-64406 is high with a CVSS score of 8.
How do I fix CVE-2026-64406?
To fix CVE-2026-64406, update your Linux kernel to the latest version that includes the patch addressing the use-after-free vulnerability.
What type of vulnerability is CVE-2026-64406?
CVE-2026-64406 is a use-after-free (UAF) vulnerability in the Bluetooth component of the Linux kernel.
What components are affected by CVE-2026-64406?
CVE-2026-64406 affects the Bluetooth subsystem in the Linux kernel.
When was CVE-2026-64406 published?
CVE-2026-64406 was published on July 25, 2026.