SB2025092223 - NULL pointer dereference in Linux kernel mellanox mlx4 driver
Published: September 22, 2025
Security Bulletin ID
SB2025092223
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) NULL pointer dereference (CVE-ID: CVE-2025-39858)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the mlx4_en_create_rx_ring() function in drivers/net/ethernet/mellanox/mlx4/en_rx.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.