Vulnerability in qede Package: Confirming skb Allocation

Kernel Updated 02 Oct 2025

Summary

24/04/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1001011: qede: confirm skb is allocated before using. Affects Kernel versions >= 8a8633978b842c88fbcfe00d4e5dde96048f630e, < e1fd0c42acfa22bb34d2ab6a111484f466ab8093. No fix is published. How to fix ↓

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Background

The qede package is a component of the Linux Kernel, which is responsible for providing network device drivers for QLogic Ethernet devices. It enables communication between the operating system and the network hardware. The qede package is widely used in Linux-based systems for networking purposes.

Vulnerability Detail

The vulnerability identified in the qede package involves the improper handling of network packets. Specifically, the package fails to confirm if a socket buffer (skb) is allocated before using it. This oversight can lead to various security issues, including potential memory corruption or information disclosure. Attackers may exploit this vulnerability to execute arbitrary code or launch denial-of-service attacks.

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 v5.17.3 or later. The fix for this issue was implemented in commit e1fd0c42acfa22bb34d2ab6a111484f466ab8093. Updating the kernel ensures that the proper checks are performed to confirm skb allocation before usage, mitigating the vulnerability.

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Workaround

As a workaround, users can apply the patch provided in the commit e1fd0c42acfa22bb34d2ab6a111484f466ab8093 manually. The patch modifies the relevant code to include the necessary checks for skb allocation. Here is an example of the code change:

- if (skb->data_len < sizeof(struct ethhdr))
+ if (!skb || skb->data_len < sizeof(struct ethhdr))
     return;

Conclusion

In conclusion, the qede package in the Linux Kernel is vulnerable to a security issue that can result in memory corruption, information disclosure, and potential code execution or denial-of-service attacks. It is crucial to update the kernel to the recommended version or apply the provided patch to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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