Use-after-free in Linux kernel - CVE-2025-40141
Published: November 12, 2025
Vulnerability identifier: #VU118395
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-40141
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the iso_sock_kill() function in net/bluetooth/iso.c. A local user can escalate privileges on the system.
How to mitigate CVE-2025-40141
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/5319145a07d8bf5b0782b25cb3115825689d42bb
- https://git.kernel.org/stable/c/80689777919f02328eb873769de4647c9dd3e371
- https://git.kernel.org/stable/c/9950f095d6c875dbe0c9ebfcf972ec88fdf26fc8
- https://git.kernel.org/stable/c/c92ad1a155ccfa38b87bd1d998287e1c0a24248d
- https://git.kernel.org/stable/c/eba6d787ec117a5d2c60f9644e0a39c18542b6be