Vulnerability in xen-netback package: Take a reference to the RX task thread

Kernel Updated 02 Oct 2025

Summary

25/06/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1000787: xen-netback: take a reference to the RX task thread. Affects Kernel versions >= 2ac061ce97f413bfbbdd768f7d2e0fda2e8170df, < 6b53db8c4c14b4e7256f058d202908b54a7b85b4. No fix is published. How to fix ↓

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Background

The xen-netback package is a component of the Linux Kernel that provides network backend functionality for Xen virtualization. It allows virtual machines to communicate with the physical network through the Xen hypervisor. The RX task thread is responsible for handling incoming network traffic in the xen-netback package.

Vulnerability Detail

The vulnerability in the xen-netback package allows an attacker to exploit a missing reference to the RX task thread. This could potentially lead to a variety of security issues, although the exact impact and attack plausibility have not been proven. The vulnerability was introduced in version v5.5 of the Linux Kernel and was fixed in version v5.10.43. For more technical details, please refer to the provided references.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

No specific workaround has been mentioned for this vulnerability.

Conclusion

In conclusion, the xen-netback package in the Linux Kernel is vulnerable to a missing reference to the RX task thread. It is recommended to update the Linux Kernel to version v5.10.43 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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