#VU106115 Improper locking in Linux kernel - CVE-2025-21875
Published: March 27, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU106115
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-2025-21875
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_nl_remove_subflow_and_signal_addr() function in net/mptcp/pm_netlink.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/2c3de6dff4373f1036e003f49a32629359530bdb
- https://git.kernel.org/stable/c/4124b782ec2b1e2e490cf0bbf10f53dfd3479890
- https://git.kernel.org/stable/c/494ec285535632732eaa5786297a9ae4f731b5ff
- https://git.kernel.org/stable/c/7cca31035c05819643ffb5d7518e9a331b3f6651
- https://git.kernel.org/stable/c/8116fb4acd5d3f06cd37f84887dbe962b6703b1c
- https://git.kernel.org/stable/c/a05da2be18aae7e82572f8d795f41bb49f5dfc7d
- https://git.kernel.org/stable/c/f865c24bc55158313d5779fc81116023a6940ca3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.235
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.179
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.130
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.18
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.81