SB20251028109 - Improper locking in Linux kernel ipv4
Published: October 28, 2025
Security Bulletin ID
SB20251028109
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-2025-40075)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the tcpm_new(), __tcp_get_metrics_req() and tcp_get_metrics() functions in net/ipv4/tcp_metrics.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.