CVEvulnerability
CVE-2025-40283
7.8 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2025-12-06
- Last modified
- 2026-10-15
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
References
- https://git.kernel.org/stable/c/1c28c1e1522c773a94e26950ffb145e88cd9834b git.kernel.org
- https://git.kernel.org/stable/c/23d22f2f71768034d6ef86168213843fc49bf550 git.kernel.org
- https://git.kernel.org/stable/c/297dbf87989e09af98f81f2bcb938041785557e8 git.kernel.org
- https://git.kernel.org/stable/c/5dc00065a0496c36694afe11e52a5bc64524a9b8 git.kernel.org
- https://git.kernel.org/stable/c/7a6d1e740220ff9dfcb6a8c994d6ba49e76db198 git.kernel.org
- https://git.kernel.org/stable/c/95b9b98c93b1c0916a3d4cf4540b7f5d69145a0d git.kernel.org
- https://git.kernel.org/stable/c/a2610ecd9fd5708be8997ca8f033e4200c0bb6af git.kernel.org
- https://git.kernel.org/stable/c/f858f004bc343a7ae9f2533bbb2a3ab27428532f git.kernel.org