CVE-2025-40283Bluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF
- 7.8HighCVSS base score
- 0.15%Exploitation in 30 daysEPSS · top 96% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 8 months later
· 8 months later
Published
- 10 months later
· 10 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.15% · top 96% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected fd913ef7ce619467c6b0644af48ba1fec499c623 – < 297dbf87989e09af98f81f2bcb938041785557e8
- affected fd913ef7ce619467c6b0644af48ba1fec499c623 – < f858f004bc343a7ae9f2533bbb2a3ab27428532f
- affected fd913ef7ce619467c6b0644af48ba1fec499c623 – < 7a6d1e740220ff9dfcb6a8c994d6ba49e76db198
- affected fd913ef7ce619467c6b0644af48ba1fec499c623 – < 5dc00065a0496c36694afe11e52a5bc64524a9b8
- affected fd913ef7ce619467c6b0644af48ba1fec499c623 – < 1c28c1e1522c773a94e26950ffb145e88cd9834b
- affected fd913ef7ce619467c6b0644af48ba1fec499c623 – < 95b9b98c93b1c0916a3d4cf4540b7f5d69145a0d
- affected fd913ef7ce619467c6b0644af48ba1fec499c623 – < a2610ecd9fd5708be8997ca8f033e4200c0bb6af
- affected fd913ef7ce619467c6b0644af48ba1fec499c623 – < 23d22f2f71768034d6ef86168213843fc49bf550
- affected 4.11
- unaffected < 4.11
- unaffected 5.4.302 – ≤ 5.4.*
- unaffected 5.10.247 – ≤ 5.10.*
- unaffected 5.15.197 – ≤ 5.15.*
- unaffected 6.1.159 – ≤ 6.1.*
- unaffected 6.6.117 – ≤ 6.6.*
- unaffected 6.12.59 – ≤ 6.12.*
- unaffected 6.17.9 – ≤ 6.17.*
- unaffected 6.18 – ≤ *
References
References8
- https://git.kernel.org/stable/c/297dbf87989e09af98f81f2bcb938041785557e8 (opens in a new tab)
- https://git.kernel.org/stable/c/f858f004bc343a7ae9f2533bbb2a3ab27428532f (opens in a new tab)
- https://git.kernel.org/stable/c/7a6d1e740220ff9dfcb6a8c994d6ba49e76db198 (opens in a new tab)
- https://git.kernel.org/stable/c/5dc00065a0496c36694afe11e52a5bc64524a9b8 (opens in a new tab)
- https://git.kernel.org/stable/c/1c28c1e1522c773a94e26950ffb145e88cd9834b (opens in a new tab)
- https://git.kernel.org/stable/c/95b9b98c93b1c0916a3d4cf4540b7f5d69145a0d (opens in a new tab)
- https://git.kernel.org/stable/c/a2610ecd9fd5708be8997ca8f033e4200c0bb6af (opens in a new tab)
- https://git.kernel.org/stable/c/23d22f2f71768034d6ef86168213843fc49bf550 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-201572 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-40283)Record last updated .