#VU105030 Improper locking in Linux kernel - CVE-2025-21705
Published: February 27, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU105030
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-2025-21705
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 mptcp_sendmsg_fastopen() function in net/mptcp/protocol.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/0263fb2e7b7b88075a5d86e74c4384ee4400828d
- https://git.kernel.org/stable/c/619af16b3b57a3a4ee50b9a30add9ff155541e71
- https://git.kernel.org/stable/c/6ec806762318a4adde0ea63342d42d0feae95079
- https://git.kernel.org/stable/c/73e268b4be27b36ae68ea10755cb003f43b38884
- https://git.kernel.org/stable/c/84ac44d9fed3a56440971cbd7600a02b70b5b32a
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.13