Vulnerability in virtio_console package: Assure used length from device is limited
Summary
GSD-2021-1001188: virtio_console: Assure used length from device is limited. Affects Kernel versions < 21a06a244d2576f93cbc9ce9bf95814c2810c36a. 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 support for the VirtIO console device, which allows communication between the guest and host systems in a virtualized environment. The package enables data transfer and control operations between the guest and host through a console interface. However, a vulnerability has been discovered in the package that could potentially lead to security issues.
Vulnerability Detail
The vulnerability in the virtio_console package arises from a lack of limitation on the used length from the device. This could allow an attacker to manipulate the used length value, leading to buffer overflows or other memory-related vulnerabilities. The impact of this vulnerability is yet to be proven, but it has the potential to enable unauthorized access, privilege escalation, or denial of service attacks. The vulnerability has been fixed in the Linux Kernel version v5.13.4 by commit 21a06a244d2576f93cbc9ce9bf95814c2810c36a.
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 v5.13.4 or later. This can be done by pulling the latest updates from the official Linux Kernel repository using the following command:
$ git pull https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
After updating the kernel, ensure that the virtio_console package is also updated to the latest version.
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Workaround
There is no specific workaround mentioned for this vulnerability. It is advised to follow the recommended fix and update the Linux Kernel and virtio_console package to the latest versions.
Conclusion
The virtio_console package in the Linux Kernel is vulnerable to a security issue related to the lack of limitation on the used length from the device. To mitigate this vulnerability, it is crucial to update the Linux Kernel to version v5.13.4 or later and ensure the virtio_console package is also updated. For further support on vulnerability remediation, contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The virtio_console package is a component of the Linux Kernel ecosystem that provides support for the VirtIO console device, enabling communication between the guest and host systems in a virtualized environment.
The impact of this vulnerability is yet to be proven, but it has the potential to enable unauthorized access, privilege escalation, or denial of service attacks.
To fix this vulnerability, update the Linux Kernel to version v5.13.4 or later and ensure the virtio_console package is also updated to the latest version.
No specific workaround is mentioned for this vulnerability. It is recommended to follow the recommended fix and update the Linux Kernel and virtio_console package.
For more details about this vulnerability, refer to the provided references link in the vulnerability details section.
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