net: macsec: Fix offload support for NETDEV_UNREGISTER event

Kernel Updated 02 Oct 2025

Summary

18/02/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1000229: net: macsec: Fix offload support for NETDEV_UNREGISTER event. Affects Kernel versions >= 3cf3227a21d1fb020fe26128e60321bd2151e922, < 2e7f5b6ee1a7a2c628253a95b0a95b582901ef1b. No fix is published. How to fix ↓

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Background

The net package in the Linux Kernel is responsible for handling network-related operations. It provides various functionalities and protocols for network communication. One of these protocols is MACsec (Media Access Control Security), which provides secure communication over Ethernet links. MACsec offload support allows hardware acceleration for MACsec operations, improving performance and efficiency. However, a vulnerability has been discovered in the offload support for the NETDEV_UNREGISTER event.

Vulnerability Detail

The vulnerability in the MACsec offload support for the NETDEV_UNREGISTER event can lead to potential security issues. When a network device is unregistered, the offload support may not be properly handled, resulting in incorrect behavior or memory corruption. An attacker could potentially exploit this vulnerability to execute arbitrary code, escalate privileges, or cause a denial-of-service condition. The vulnerability was introduced in Linux Kernel version v5.6 and is fixed in version v5.10.99.

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 v5.10.99 or later. This update includes the necessary patch to address the issue. Users can obtain the updated kernel from the official Linux Kernel repository or through their respective Linux distribution's package management system.

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Workaround

There is no known workaround for this vulnerability. It is essential to apply the provided fix by updating the Linux Kernel to the recommended version.

Conclusion

The vulnerability in the MACsec offload support for the NETDEV_UNREGISTER event can have serious security implications. It is crucial to update the Linux Kernel to version v5.10.99 or later to mitigate the risk. For further support and assistance in vulnerability remediation, please contact DevNack.com.

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