Vulnerability in Linux Kernel: hv: vmbus
Summary
GSD-2022-1002188: Drivers: hv: vmbus: Fix potential crash on module unload. Affects Kernel versions >= 9f38f7b46de0747c1909e8c557aa21715dce20c5, < 2133c422a103cf7c7768c37b9ac382e73b691892. No fix is published. How to fix ↓
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Background
The Linux Kernel is the core component of the Linux operating system, responsible for managing system resources and providing an interface for applications to interact with the hardware. The 'hv: vmbus' driver is a component of the Kernel that facilitates communication between the host and virtual machines in a Hyper-V environment. It allows for efficient data transfer and device management. However, a vulnerability has been discovered in this driver that could potentially lead to a system crash when unloading the module.
Vulnerability Detail
The vulnerability in the 'hv: vmbus' driver of the Linux Kernel can be triggered during the module unload process. If exploited, it may result in a system crash, leading to a denial of service (DoS) condition. The exact attack vector and impact of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in Linux Kernel version v5.4.189 by commit 2133c422a103cf7c7768c37b9ac382e73b691892. The vulnerability was introduced in version v5.4.35 by commit 9f38f7b46de0747c1909e8c557aa21715dce20c5.
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
In conclusion, a vulnerability has been discovered in the 'hv: vmbus' driver of the Linux Kernel that could potentially lead to a system crash. It is crucial to update the Linux Kernel to version v5.4.189 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is a potential system crash, leading to a denial of service (DoS) condition.
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 and the Vulert Playground will analyze it for any open-source vulnerabilities, including this one.
No, there is no known exploit for this vulnerability at the moment. However, it is important to apply the fix as soon as possible to mitigate any potential risks.
Unfortunately, no specific temporary measures or workarounds have been provided for this vulnerability. It is recommended to update the Linux Kernel to the fixed version as soon as possible.
You can find more information about this vulnerability in the GSD-2022-1002188 entry of the Cloud Security Alliance GSD database. The link to the specific entry is available in the vulnerability details section of this report.
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