CVE Database›Document archive›CVE-2026-68392

CVE-2026-68392

kernel: Bluetooth: mgmt: fix locking in unpair_device/disconnect_sync

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · August 10, 2026

Updated · August 31, 2026

Description

A flaw was found in the Linux kernel's Bluetooth management subsystem. This vulnerability occurs due to incorrect locking when handling memory pointers during device unpairing and disconnection. An attacker could exploit this to trigger a Use-After-Free (UAF) condition, which is a type of memory corruption that may lead to system instability or other impacts.

Statement

This issue affects Bluetooth management (mgmt). unpair_device/disconnect_sync dereferenced RCU-protected hci_conn outside critical sections, risking UAF. Systems without Bluetooth are not affected.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-413 · Improper Resource Locking