CVE-2025-40283

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	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

Configurations

No configuration.

History

30 Jul 2026, 06:24

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.8

06 Dec 2025, 22:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-12-06 22:15

Updated : 2026-07-30 06:24

NVD link : CVE-2025-40283

Mitre link : CVE-2025-40283

CVE.ORG link : CVE-2025-40283

JSON object : View

Products Affected

No product.

CWE

No CWE.

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The same data is\nthen used later in the function, hence the UAF.\n\nFix by moving the accesses to btusb data to before the data is free'd."}], "lastModified": "2026-07-30T06:24:26.490", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}