SB20240620109 - Null pointer dereference in Linux kernel en rep driver
Published: June 20, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240620109
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-2021-47164)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to null pointer dereference error within the mlx5e_rep_changelowerstate_event() function in drivers/net/ethernet/mellanox/mlx5/core/en/rep/bond.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/2e4b0b95a489259f9d35a3db17023061f8f3d587
- https://git.kernel.org/stable/c/bdfd3593a8248eea6ecfcbf7b47b56b86515672d
- https://git.kernel.org/stable/c/83026d83186bc48bb41ee4872f339b83f31dfc55
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.42
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13