SB2025062085 - Improper locking in Linux kernel mptcp
Published: June 20, 2025 Updated: June 21, 2025
Security Bulletin ID
SB2025062085
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-2022-50070)
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_frag(), mptcp_subflow_get_send() and __mptcp_push_pending() functions in net/mptcp/protocol.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.