CVE-2026-68392
Received Received - Intake

Bluetooth: mgmt Use-After-Free in Linux Kernel

Publication date: 2026-08-10

Last updated on: 2026-08-10

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: fix locking in unpair_device/disconnect_sync Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF. Take hdev->lock for hci_conn lookup and hci_abort_conn(). Don't use RCU to ensure the conn is fully initialized at this point.

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Meta Information

Published
2026-08-10
Last Modified
2026-08-10
Generated
2026-08-10
AI Q&A
2026-08-10
EPSS Evaluated
N/A
NVD
CVE-2026-68392
EUVD
EUVD-2026-55578

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in the Linux kernel involves improper handling of Bluetooth device management. It allows dereferencing of RCU-protected pointers outside critical sections, which can lead to a use-after-free (UAF) condition. The issue occurs during device unpairing or disconnection when the system fails to properly lock resources, potentially causing memory corruption or crashes.

Impact Analysis

If exploited, this vulnerability could allow an attacker to cause system instability, crashes, or execute arbitrary code with kernel privileges. On affected systems, it may lead to denial-of-service conditions or unauthorized access to sensitive data processed by the Bluetooth subsystem.

Compliance Impact

This vulnerability could impact compliance by enabling unauthorized access to Bluetooth-connected devices, potentially violating data protection requirements under GDPR or HIPAA. Organizations must ensure systems are patched to prevent such breaches that could lead to regulatory penalties.

Mitigation Strategies

Update the Linux kernel to the latest stable version that includes the fix for this vulnerability. Monitor vendor advisories for patches and apply them promptly.

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