Vulnerability in Kernel: irqchip/gic-v3-its
Summary
UVI-2021-1001668: irqchip/gic-v3-its: Fix potential VPE leak on error. Affects Kernel versions >= 7d75bbb4bc1ad90386776459d37e4ddfe605671e, < 568662e37f927e3dc3e475f3ff7cf4ab7719c5e7. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages communication between hardware and software. It provides essential functions and services to ensure the proper functioning of the system. The irqchip/gic-v3-its module is responsible for handling interrupts in systems that use the GICv3 architecture. Interrupts are signals that notify the processor of events that require attention. This vulnerability in irqchip/gic-v3-its can lead to a potential Virtual Processor Element (VPE) leak when an error occurs.
Vulnerability Detail
The vulnerability in irqchip/gic-v3-its module can result in a Virtual Processor Element (VPE) leak when an error occurs. A VPE is a logical entity that represents a virtual processor in the system. The leak can occur due to improper error handling, potentially leading to resource exhaustion or other security issues. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in Linux Kernel version v5.10.70 by commit 568662e37f927e3dc3e475f3ff7cf4ab7719c5e7. The vulnerability was introduced in version v4.14 by commit 7d75bbb4bc1ad90386776459d37e4ddfe605671e.
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 vulnerability in irqchip/gic-v3-its module can potentially lead to a Virtual Processor Element (VPE) leak when an error occurs. It is crucial to update the Linux Kernel to version v5.10.70 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven. However, it has the potential to result in a Virtual Processor Element (VPE) leak, which can lead to resource exhaustion or other security issues.
You can use tools like Vulert (https://vulert.com) 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 in the software.
Yes, a patch has been released in Linux Kernel version v5.10.70 to fix this vulnerability. It is recommended to update to this version or later.
Yes, you can manually fix this vulnerability by updating the Linux Kernel to version v5.10.70 or later. However, it is important to ensure compatibility with your system configuration and dependencies.
You can find more information about this vulnerability in the official Linux Kernel documentation or by referring to the provided references link in the vulnerability details.
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