SB2025120867 - Use-after-free in Linux kernel bluetooth driver
Published: December 8, 2025
Security Bulletin ID
SB2025120867
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2025-40283)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the btusb_disconnect() function in drivers/bluetooth/btusb.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1c28c1e1522c773a94e26950ffb145e88cd9834b
- https://git.kernel.org/stable/c/23d22f2f71768034d6ef86168213843fc49bf550
- https://git.kernel.org/stable/c/297dbf87989e09af98f81f2bcb938041785557e8
- https://git.kernel.org/stable/c/5dc00065a0496c36694afe11e52a5bc64524a9b8
- https://git.kernel.org/stable/c/7a6d1e740220ff9dfcb6a8c994d6ba49e76db198
- https://git.kernel.org/stable/c/95b9b98c93b1c0916a3d4cf4540b7f5d69145a0d
- https://git.kernel.org/stable/c/a2610ecd9fd5708be8997ca8f033e4200c0bb6af
- https://git.kernel.org/stable/c/f858f004bc343a7ae9f2533bbb2a3ab27428532f