SB2025082882 - Improper locking in Linux kernel mlx5 core driver
Published: August 28, 2025
Security Bulletin ID
SB2025082882
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-2025-38628)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the mlx5_vdpa_free() and mlx5_vdpa_dev_add() functions in drivers/vdpa/mlx5/net/mlx5_vnet.c, within the mlx5_vdpa_destroy_mr_resources() function in drivers/vdpa/mlx5/core/mr.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.