Vulnerability in Linux Kernel: wq: handle VM suspension in stall detection
Summary
GSD-2021-1001013: wq: handle VM suspension in stall detection. Affects Kernel versions < 8b30908df8d53db5ccb7f1bcd1c97d3aa75bbd62. No fix is published. How to fix ↓
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Background
The Linux Kernel is a critical component of the Linux operating system, responsible for managing system resources and providing an interface between hardware and software. It is widely used in various devices, including servers, desktops, and embedded systems. The wq (workqueue) subsystem in the Linux Kernel is responsible for managing and executing work items asynchronously. It allows tasks to be offloaded to worker threads, improving system performance and responsiveness. However, a vulnerability has been discovered in the wq subsystem that could potentially be exploited by attackers.
Vulnerability Detail
The vulnerability in the wq subsystem of the Linux Kernel relates to the handling of VM (Virtual Machine) suspension in stall detection. When a VM is suspended, the wq subsystem may not handle this event properly, leading to potential issues. Although the impact and attack plausibility of this vulnerability have not been proven, it is important to address it to ensure the security and stability of the system. The vulnerability has been fixed in Linux Kernel version v5.12.11 by commit 8b30908df8d53db5ccb7f1bcd1c97d3aa75bbd62.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The vulnerability in the wq subsystem of the Linux Kernel, related to handling VM suspension in stall detection, has been identified and fixed in Linux Kernel version v5.12.11. It is recommended to update the Linux Kernel to the fixed version to ensure the security and stability of the system. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The impact of this vulnerability is currently unknown, as the actual attack plausibility has not been proven. However, it is important to address this vulnerability to ensure the security and stability of the system.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will analyze the dependencies and alert you if any open-source vulnerabilities, including this one, are found.
No specific workaround has been provided for this vulnerability. It is recommended to update the Linux Kernel to the fixed version.
More information about the fix for this vulnerability can be found in the commit 8b30908df8d53db5ccb7f1bcd1c97d3aa75bbd62 in the Linux Kernel repository.
To update the Linux Kernel to the fixed version, you can obtain the updated kernel source code from the official Linux Kernel repository and compile it for your system. Alternatively, you can wait for your Linux distribution to provide an updated package containing the fixed version of the kernel.
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