SB2024062077 - Improper locking in Linux kernel hw mlx5 driver
Published: June 20, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024062077
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-2021-47615)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the mlx5_ib_dereg_mr(), mlx5_ib_alloc_pi_mr() and __mlx5_ib_alloc_mr() functions in drivers/infiniband/hw/mlx5/mr.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/e3bc4d4b50cae7db08e50dbe43f771c906e97701
- https://git.kernel.org/stable/c/c44979ace49b4aede3cc7cb5542316e53a4005c9
- https://git.kernel.org/stable/c/f0ae4afe3d35e67db042c58a52909e06262b740f
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16