Vulnerability in i40e: Fix freeing of uninitialized misc IRQ vector

Kernel Updated 02 Oct 2025

Summary

19/10/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1001549: i40e: Fix freeing of uninitialized misc IRQ vector. Affects Kernel versions >= c17401a1dd210a5f22ab1ec7c7366037c158a14c, < 60ad4cde0ad28921f9ea25b0201c774b95ffa4b4. No fix is published. How to fix ↓

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Background

The i40e package is a component of the Linux Kernel, which is responsible for managing network interfaces that use Intel Ethernet Controllers. It provides the necessary drivers and functionality for these controllers to operate efficiently. The package is widely used in various Linux distributions and is critical for network communication.

Vulnerability Detail

The vulnerability in i40e involves the freeing of an uninitialized miscellaneous (misc) IRQ vector. This issue was discovered in the Linux Kernel and has the potential to be exploited by attackers. If successfully exploited, it could lead to various security risks, including denial of service (DoS) attacks or the execution of arbitrary code. The vulnerability was introduced in version v4.15 of the Linux Kernel and was fixed in version v4.19.211.

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 v4.19.211 or later. This update includes the necessary patch to address the issue and ensure the proper freeing of the misc IRQ vector. Users should follow the standard procedures for updating the Linux Kernel on their respective distributions.

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Workaround

There is no specific workaround mentioned for this vulnerability. The recommended course of action is to apply the fix by updating the Linux Kernel to the patched version.

Conclusion

The vulnerability in i40e involving the freeing of an uninitialized misc IRQ vector can pose significant security risks if exploited. It is crucial to update the Linux Kernel to the patched version to mitigate these risks. For further support and assistance in vulnerability remediation, please contact DevNack.com.

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