Vulnerability in Kernel: gso: do not skip outer ip header in case of ipip and net_failover

Kernel Updated 02 Oct 2025

Summary

18/03/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1000891: gso: do not skip outer ip header in case of ipip and net_failover. Affects Kernel versions >= cb32f511a70be8967ac9025cf49c44324ced9a39, < 2b3cdd70ea5f5a694f95ea1788393fb3b83071ea. No fix is published. How to fix ↓

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Background

The Kernel is a crucial component of the Linux operating system that manages the system's resources and facilitates communication between hardware and software. It provides essential functions such as process management, memory management, and device drivers. This vulnerability affects the Kernel and specifically relates to the handling of outer IP headers in the presence of IP-in-IP (IPIP) and network failover (net_failover) configurations.

Vulnerability Detail

The vulnerability arises from a flaw in the gso (generic segmentation offload) implementation in the Kernel. In certain scenarios involving IPIP and net_failover, the outer IP header is erroneously skipped, leading to potential security issues. The impact and feasibility of an attack leveraging this vulnerability have not been proven yet. However, it is crucial to address this issue to ensure the integrity and security of the affected systems.

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 v5.4.182 or later. The fix for this vulnerability was implemented in commit 2b3cdd70ea5f5a694f95ea1788393fb3b83071ea. It is advisable to regularly update the Kernel to the latest stable version to benefit from security patches and bug fixes.

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Workaround

There is no specific workaround mentioned for this vulnerability. However, implementing strict network access controls and regularly updating the Kernel can help mitigate potential risks.

Conclusion

The vulnerability in the Kernel related to the handling of outer IP headers in the presence of IPIP and net_failover configurations can potentially lead to security risks. It is crucial to update the Kernel to version v5.4.182 or later to fix this vulnerability. Regularly updating the Kernel and implementing strict network access controls are recommended practices to enhance system security. For further support on vulnerability remediation, you can reach out to DevNack.com.

See every vulnerability recorded for Kernel →

FAQ

What is the impact of this vulnerability?

The impact of this vulnerability is not yet proven. However, if successfully exploited, it could potentially lead to security breaches and unauthorized access to sensitive information.

How can I check if my system is affected by this vulnerability?

You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will provide real-time alerts for any open-source vulnerabilities, including this one.