Vulnerability in Linux
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.
EPSS: 0.002 (7.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux — versions fd913ef7ce619467c6b0644af48ba1fec499c623, 4.11, 0
References
Frequently asked questions
- What is CVE-2025-40283?
- CVE-2025-40283 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-12-06.
- How severe is CVE-2025-40283?
- High severity. CVSS v3 base score is 7.8 out of 10.