Vulnerability in Kernel: dm rq: don't queue request to blk-mq during DM suspend
Summary
GSD-2021-1002079: dm rq: don't queue request to blk-mq during DM suspend. Affects Kernel versions < 8ca9745efe3528feb06ca4e117188038eea2d351. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential functionalities and services to enable the proper functioning of the system. One of its key features is the Device Mapper (DM), which allows for the creation of virtual block devices by mapping physical block devices. These virtual devices can be used for various purposes, such as encryption, volume management, and snapshotting. However, a vulnerability has been discovered in the Kernel's DM component that can lead to potential security risks.
Vulnerability Detail
The vulnerability in the Kernel's DM component involves the queuing of requests to the block multi-queue (blk-mq) during DM suspend. When the DM is suspended, it should not allow any new requests to be queued to the blk-mq. However, due to a flaw, requests can still be queued during this state, potentially leading to unexpected behavior or security issues. The impact and attack plausibility of this vulnerability have not been proven yet, but it is important to address it to ensure the overall security and stability of the system.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The vulnerability in the Kernel's DM component regarding the queuing of requests to blk-mq during DM suspend can potentially lead to unexpected behavior or security issues. It is crucial to update the Linux Kernel to version v5.14.14 or later to fix this vulnerability. For more information and support, you can reach out to DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven, but it could potentially lead to unexpected behavior or security issues when queuing requests to blk-mq during DM suspend.
You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will analyze it in real-time to identify any open-source vulnerabilities, including this one.
No specific workaround has been provided for this vulnerability. It is recommended to update the Linux Kernel to the latest version to fix the issue.
You can find more information about this vulnerability in the GSD-2021-1002079 JSON file available on the GitHub repository of the Cloud Security Alliance's GSD database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1002xxx/GSD-2021-1002079.json).
For further support on vulnerability remediation, you can contact info@devnack.com. They can provide guidance and assistance in addressing this vulnerability in your system.
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