SB20251226118 - Use-after-free in Linux kernel mlx5 core driver
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251226118
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2023-54148)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the mlx5e_init_rep_tx(), mlx5e_cleanup_rep_tx(), uplink_rep_async_event(), mlx5e_uplink_rep_enable() and mlx5e_uplink_rep_disable() functions in drivers/net/ethernet/mellanox/mlx5/core/en_rep.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.