net/mlx5: Delete FTE when no rules are attached

Kernel Updated 02 Oct 2025

Summary

28/06/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1003768: net/mlx5: fs, delete the FTE when there are no rules attached to it. Affects Kernel versions < 430af81135d5ae53d04f1a20a9c79fd6c8ecfb4c. No fix is published. How to fix ↓

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Background

The net/mlx5 package is a component of the Linux Kernel that provides support for Mellanox network adapters. It includes drivers and utilities for managing and configuring these adapters. The package is responsible for handling network traffic and implementing various networking features.

Vulnerability Detail

The vulnerability in net/mlx5 involves the failure to delete a Forwarding Table Entry (FTE) when there are no rules attached to it. This can lead to a resource leak, where unused FTEs are not properly freed, potentially causing memory exhaustion and impacting system performance. An attacker could potentially exploit this vulnerability to exhaust system resources and cause a denial-of-service (DoS) condition.

How To Fix

No fixed version is published for this vulnerability.

To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.4.198 or later. This fix is implemented in commit 430af81135d5ae53d04f1a20a9c79fd6c8ecfb4c. Updating the Kernel ensures that the FTEs are properly deleted when no rules are attached, preventing resource leaks and potential DoS attacks.

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Workaround

There is no specific workaround mentioned for this vulnerability.

Conclusion

The net/mlx5 package in the Linux Kernel is vulnerable to a resource leak when FTEs are not properly deleted. This can lead to memory exhaustion and impact system performance. It is recommended to update the Kernel to the latest version to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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