CVE-2025-40283: Bluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF

Published Dec 6, 2025
·
Updated

Bluetooth: btusb: reorder cleanup in btusbdisconnect to avoid UAF

Affected Software

3 affected componentsFixes available
linux/kernel
Microsoft azl3 kernel 6.6.112.1-2
Microsoft azl3 kernel 6.6.112.1-2

Event History

Dec 6, 2025
CVE Published
via MITRE·09:51 PM
Data Sourced
via MITRE·09:51 PM
DescriptionSeverity
Data Sourced
via NVD·10:15 PM
DescriptionSeverity
Dec 8, 2025
Data Sourced
via Microsoft·01:05 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·01:05 AM
DescriptionSeverity

Frequently Asked Questions

1

What is the severity of CVE-2025-40283?

CVE-2025-40283 has been reported as having a critical severity due to potential use-after-free vulnerabilities in the Bluetooth subsystem of the Linux kernel.

2

How do I fix CVE-2025-40283?

To fix CVE-2025-40283, update the Linux kernel to the latest stable version that includes the patch for this vulnerability.

3

What systems are affected by CVE-2025-40283?

CVE-2025-40283 affects all versions of the Linux kernel with Bluetooth functionality that use the btusb driver.

4

What are the risks of CVE-2025-40283?

The risks of CVE-2025-40283 include potential exploitation leading to remote code execution or system crashes affecting the stability of the affected systems.

5

Is CVE-2025-40283 being actively exploited?

As of the latest information, there is no public indication that CVE-2025-40283 is being actively exploited in the wild, but it is advisable to apply patches promptly.

Contact

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