Vulnerability in Linux Kernel: hv: vmbus
Summary
GSD-2022-1002314: Drivers: hv: vmbus: Fix potential crash on module unload. Affects Kernel versions >= 5e059fc0f054309036d3f612bc8b0a502ca58545, < 6b4c0149a56147b29169e07000d566162892722a. 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 a bridge between hardware and software. The 'hv: vmbus' driver is part of the Kernel's hypervisor support, specifically designed for communication between the host and virtual machines. It enables efficient data transfer and device enumeration. However, a vulnerability has been discovered in this driver that could potentially lead to a crash when unloading the module.
Vulnerability Detail
The vulnerability in the 'hv: vmbus' driver of the Linux Kernel arises from a flaw introduced in version v4.19.118 and fixed in v4.19.238. When unloading the module, a crash may occur, potentially leading to a denial-of-service situation. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has not been exploited in the wild, but it is crucial to apply the fix to ensure system stability and security.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been mentioned for this vulnerability. It is advised to apply the fix by updating the Linux Kernel to the recommended version.
Conclusion
The vulnerability in the 'hv: vmbus' driver of the Linux Kernel can potentially lead to a crash when unloading the module, resulting in a denial-of-service situation. It is crucial to update the Linux Kernel to version v4.19.238 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is a potential crash when unloading the 'hv: vmbus' module, which could lead to a denial-of-service situation.
No, there have been no known exploits of this vulnerability in the wild.
The vulnerability was introduced in version v4.19.118 and fixed in version v4.19.238. Any version between these two is potentially affected.
Updating the Linux Kernel can be done by following the official documentation provided by the Linux distribution or by using package management tools specific to the distribution.
Yes, you can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities.
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