Input validation error in Linux kernel - CVE-2025-71220
Published: February 16, 2026
Vulnerability identifier: #VU122950
CSH Severity: Low
CVSS v4.0: 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-2025-71220
CWE-ID: CWE-20
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 perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the create_smb2_pipe() function in fs/smb/server/smb2pdu.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2025-71220
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/04dd114b682a4ccaeba2c2bad049c8b50ce740d8
- https://git.kernel.org/stable/c/2b7b4df87fe6f2db6ee45f475de6b37b8b8e5d29
- https://git.kernel.org/stable/c/7c28f8eef5ac5312794d8a52918076dcd787e53b
- https://git.kernel.org/stable/c/a2c68e256fb7a4ac34154c6e865a1389acca839f
- https://git.kernel.org/stable/c/ac18761b530b5dd40f59af8a25902282e5512854
- https://git.kernel.org/stable/c/fdda836fcee6fdbcccc24e3679097efb583f581f