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CVE-2025-40283

HIGHCVSS 7.8/10EPSS 0.18%

Last modified

CVE-2025-40283 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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 estimates a 0.18% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.18%

7.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= fd913ef7ce619467c6b0644af48ba1fec499c623, < 297dbf87989e09af98f81f2bcb938041785557e8; >= fd913ef7ce619467c6b0644af48ba1fec499c623, < f858f004bc343a7ae9f2533bbb2a3ab27428532f; >= fd913ef7ce619467c6b0644af48ba1fec499c623, < 7a6d1e740220ff9dfcb6a8c994d6ba49e76db198; >= fd913ef7ce619467c6b0644af48ba1fec499c623, < 5dc00065a0496c36694afe11e52a5bc64524a9b8; >= fd913ef7ce619467c6b0644af48ba1fec499c623, < 1c28c1e1522c773a94e26950ffb145e88cd9834b; >= fd913ef7ce619467c6b0644af48ba1fec499c623, < 95b9b98c93b1c0916a3d4cf4540b7f5d69145a0d; >= fd913ef7ce619467c6b0644af48ba1fec499c623, < a2610ecd9fd5708be8997ca8f033e4200c0bb6af; >= fd913ef7ce619467c6b0644af48ba1fec499c623, < 23d22f2f71768034d6ef86168213843fc49bf550
LinuxLinux4.11

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is 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.
How severe is CVE-2025-40283?
CVE-2025-40283 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2025-40283?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST