#VU121354 Improper locking in Linux kernel - CVE-2025-71088
Published: January 14, 2026
Vulnerability identifier: #VU121354
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-71088
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the subflow_state_change() function in net/mptcp/subflow.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/25f1ae942c097b7ae4ce5c2b9c6fefb8e3672b86
- https://git.kernel.org/stable/c/71154bbe49423128c1c8577b6576de1ed6836830
- https://git.kernel.org/stable/c/79f80a7a47849ef1b3c25a0bedcc448b9cb551c1
- https://git.kernel.org/stable/c/b5f46a08269265e2f5e87d855287d6d22de0a32b
- https://git.kernel.org/stable/c/c9bf315228287653522894df9d851e9b43db9516