SB2025032741 - Improper locking in Linux kernel mptcp
Published: March 27, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025032741
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper locking (CVE-ID: CVE-2025-21875)
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.
References
- 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