SB20260123117 - Improper locking in Linux kernel dsa
Published: January 23, 2026
Security Bulletin ID
SB20260123117
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-2025-71152)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the dsa_port_parse_of(), dev_find_class(), dsa_switch_release_ports() and dsa_switch_shutdown() functions in net/dsa/dsa.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.