net: tun: stop NAPI when detaching queues
Summary
GSD-2022-1004609: net: tun: stop NAPI when detaching queues. Affects Kernel versions >= 943170998b200190f99d3fe7e771437e2c51f319, < c70ca16f72b21d5e33d030b4f2da6df3abf0f293. No fix is published. How to fix ↓
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Background
The Kernel package in the Linux ecosystem is responsible for managing the core functionality of the operating system. It provides essential services and interfaces for various hardware and software components to interact with the system. The tun module within the Kernel is used for creating virtual network interfaces. These interfaces are commonly employed in virtual private networks (VPNs) and other network-related applications.
Vulnerability Detail
The vulnerability identified as GSD-2022-1004609 affects the tun module in the Kernel package. When detaching queues, the NAPI (New API) feature is not properly stopped. This flaw can potentially lead to security vulnerabilities, although the exact impact and attack plausibility have not been proven yet. The vulnerability was introduced in version v4.15 of the Linux Kernel and has been fixed in version v5.10.129 by commit c70ca16f72b21d5e33d030b4f2da6df3abf0f293.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The net: tun: stop NAPI when detaching queues vulnerability in the Kernel package can potentially introduce security vulnerabilities in systems utilizing the tun module. It is crucial to update the Linux Kernel package to version v5.10.129 or later to mitigate these risks. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The exact impact of this vulnerability is not yet proven. However, it has the potential to introduce security vulnerabilities in systems utilizing the tun module.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground and it will provide real-time alerts for open-source vulnerabilities, including this one.
Yes, you can manually apply the fix by identifying the commit c70ca16f72b21d5e33d030b4f2da6df3abf0f293 in the Linux Kernel source code and applying the necessary changes. However, it is recommended to update the entire Linux Kernel package to the latest version for comprehensive security.
As of now, there are no known exploits for this vulnerability. However, it is important to apply the fix or update the Linux Kernel package to mitigate any potential risks.
You can find more information about this vulnerability in the GSD-2022-1004609 entry of the GSD database maintained by the Cloud Security Alliance. The entry can be accessed at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1004xxx/GSD-2022-1004609.json.
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