Answer in brief
CVE-2025-40283 records a High severity (CVSS 7.8) vulnerability in Bluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=fd913ef7ce619467c6b0644af48ba1fec499c623 <297dbf87989e09af98f81f2bcb938041785557e8 || >=fd913ef7ce619467c6b0644af48ba1fec499c623 <f858f004bc343a7ae9f2533bbb2a3ab27428532f || >=fd913ef7ce619467c6b0644af48ba1fec499c623 <7a6d1e740220ff9dfcb6a8c994d6ba49e76db198 || >=fd913ef7ce619467c6b0644af48ba1fec499c623 <5dc00065a0496c36694afe11e52a5bc64524a9b8 || >=fd913ef7ce619467c6b0644af48ba1fec499c623 <1c28c1e1522c773a94e26950ffb145e88cd9834b || >=fd913ef7ce619467c6b0644af48ba1fec499c623 <95b9b98c93b1c0916a3d4cf4540b7f5d69145a0d || >=fd913ef7ce619467c6b0644af48ba1fec499c623 <a2610ecd9fd5708be8997ca8f033e4200c0bb6af || >=fd913ef7ce619467c6b0644af48ba1fec499c623 <23d22f2f71768034d6ef86168213843fc49bf550 | 297dbf87989e09af98f81f2bcb938041785557e8, f858f004bc343a7ae9f2533bbb2a3ab27428532f, 7a6d1e740220ff9dfcb6a8c994d6ba49e76db198, 5dc00065a0496c36694afe11e52a5bc64524a9b8, 1c28c1e1522c773a94e26950ffb145e88cd9834b, 95b9b98c93b1c0916a3d4cf4540b7f5d69145a0d, a2610ecd9fd5708be8997ca8f033e4200c0bb6af, 23d22f2f71768034d6ef86168213843fc49bf550 |
| Linux/Linuxgeneric | 4.11 | Not reported |
Published upstream
Dec 6, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.