Vulnerability in virtio_console package: Assure used length from device is limited

Kernel Updated 02 Oct 2025

Summary

03/08/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1001445: virtio_console: Assure used length from device is limited. Affects Kernel versions < 9e2b8368b2079437c6840f3303cb0b7bc9b896ee. No fix is published. How to fix ↓

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Background

The virtio_console package is a component of the Linux Kernel ecosystem. It provides a virtual console interface for communication between the host and guest systems in a virtualized environment. This package allows the exchange of data and commands between the host and guest systems. However, a vulnerability has been identified in the package that could potentially lead to security issues.

Vulnerability Detail

The vulnerability in the virtio_console package arises from the lack of limitation on the used length from the device. This means that an attacker could potentially send excessive data to the device, causing a buffer overflow or other memory-related issues. Exploiting this vulnerability could lead to arbitrary code execution, denial of service, or privilege escalation. It is important to note that the impact and attack plausibility of this vulnerability have not been proven yet.

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 v4.9.276 or later. This fix is implemented in commit 9e2b8368b2079437c6840f3303cb0b7bc9b896ee. Updating the Kernel will ensure that the used length from the device is properly limited, mitigating the risk of buffer overflow and related issues.

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Workaround

No specific workaround has been mentioned for this vulnerability.

Conclusion

The virtio_console package in the Linux Kernel is vulnerable to a potential security issue related to the limitation of used length from the device. It is recommended to update the Kernel to version v4.9.276 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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