SB20240621106 - NULL pointer dereference in Linux kernel mlx5 core driver
Published: June 21, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240621106
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-2021-47197)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the mlx5_debug_cq_remove() function in drivers/net/ethernet/mellanox/mlx5/core/debugfs.c, within the mlx5_core_destroy_cq() function in drivers/net/ethernet/mellanox/mlx5/core/cq.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/471c492890557bd58f73314bb4ad85d5a8fd5026
- https://git.kernel.org/stable/c/2ae38157080616a13a9fe3f0b4b6ec0070aa408a
- https://git.kernel.org/stable/c/76ded29d3fcda4928da8849ffc446ea46871c1c2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.82
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16