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

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF There is a KASAN: slab-use-after-free read in btusb_disconnect(). Calling "usb_driver_release_interface(&btusb_driver, data->intf)" will free the btusb data associated with the interface. The same data is then used later in the function, hence the UAF. Fix by moving the accesses to btusb data to before the data is free'd.

INFO

Published Date :

Dec. 6, 2025, 10:15 p.m.

Last Modified :

Dec. 6, 2025, 10:15 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2025-40283 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Fix use-after-free by reordering cleanup operations in the Bluetooth driver.
  • Update the Linux kernel to the latest version.
  • Apply the specific patch for the Bluetooth driver.
  • Ensure proper interface release before data access.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-40283.

URL Resource
https://git.kernel.org/stable/c/1c28c1e1522c773a94e26950ffb145e88cd9834b
https://git.kernel.org/stable/c/23d22f2f71768034d6ef86168213843fc49bf550
https://git.kernel.org/stable/c/297dbf87989e09af98f81f2bcb938041785557e8
https://git.kernel.org/stable/c/5dc00065a0496c36694afe11e52a5bc64524a9b8
https://git.kernel.org/stable/c/7a6d1e740220ff9dfcb6a8c994d6ba49e76db198
https://git.kernel.org/stable/c/95b9b98c93b1c0916a3d4cf4540b7f5d69145a0d
https://git.kernel.org/stable/c/a2610ecd9fd5708be8997ca8f033e4200c0bb6af
https://git.kernel.org/stable/c/f858f004bc343a7ae9f2533bbb2a3ab27428532f
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-40283 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-40283 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-40283 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-40283 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Dec. 06, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF There is a KASAN: slab-use-after-free read in btusb_disconnect(). Calling "usb_driver_release_interface(&btusb_driver, data->intf)" will free the btusb data associated with the interface. The same data is then used later in the function, hence the UAF. Fix by moving the accesses to btusb data to before the data is free'd.
    Added Reference https://git.kernel.org/stable/c/1c28c1e1522c773a94e26950ffb145e88cd9834b
    Added Reference https://git.kernel.org/stable/c/23d22f2f71768034d6ef86168213843fc49bf550
    Added Reference https://git.kernel.org/stable/c/297dbf87989e09af98f81f2bcb938041785557e8
    Added Reference https://git.kernel.org/stable/c/5dc00065a0496c36694afe11e52a5bc64524a9b8
    Added Reference https://git.kernel.org/stable/c/7a6d1e740220ff9dfcb6a8c994d6ba49e76db198
    Added Reference https://git.kernel.org/stable/c/95b9b98c93b1c0916a3d4cf4540b7f5d69145a0d
    Added Reference https://git.kernel.org/stable/c/a2610ecd9fd5708be8997ca8f033e4200c0bb6af
    Added Reference https://git.kernel.org/stable/c/f858f004bc343a7ae9f2533bbb2a3ab27428532f
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.