Fix potential VPE leak on error in Kernel
Summary
GSD-2021-1001611: irqchip/gic-v3-its: Fix potential VPE leak on error. Affects Kernel versions >= 7d75bbb4bc1ad90386776459d37e4ddfe605671e, < 42d3711c23781045e7a5cd28536c774b9a66d20b. 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 system resources and facilitates communication between hardware and software. It provides essential functions such as process management, memory management, and device drivers. The vulnerability in question affects the irqchip/gic-v3-its module within the Kernel. This module is responsible for handling interrupts on ARM-based systems using the Generic Interrupt Controller (GIC) version 3. The vulnerability can lead to a potential VPE (Virtual Processor Element) leak on error, which can have security implications and impact system stability.
Vulnerability Detail
The vulnerability arises from a flaw in the irqchip/gic-v3-its module. When an error occurs during the handling of interrupts, there is a possibility of a VPE leak. A VPE leak can result in resource exhaustion and potentially allow an attacker to disrupt the system or gain unauthorized access. The vulnerability was introduced in version v4.14 of the Linux Kernel and has been fixed in version v5.4.150. It is important to update to the fixed version to mitigate the risk of exploitation.
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. The recommended approach is to apply the fix by updating the Kernel to the patched version.
Conclusion
The vulnerability in the irqchip/gic-v3-its module of the Kernel can potentially lead to a VPE leak on error, posing security risks and system instability. It is crucial to update the Kernel to version v5.4.150 or later to mitigate this vulnerability. By following the recommended steps for updating the Kernel and ensuring proper testing, the risk of exploitation can be significantly reduced. For additional support or assistance, please contact DevNack.com.
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FAQ
The vulnerability can potentially lead to a VPE leak on error, which can result in resource exhaustion and system instability. It may also provide an avenue for attackers to disrupt the system or gain unauthorized access.
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 known vulnerabilities are present.
At the time of this report, there are no known public exploits targeting this specific vulnerability. However, it is always recommended to apply security patches promptly to mitigate potential risks.
For more technical details about this vulnerability, you can refer to the source information provided by the Cloud Security Alliance's GSD Database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1001xxx/GSD-2021-1001611.json).
If you require further support or assistance in addressing this vulnerability, you can reach out to info@devnack.com. Our team of experts will be happy to assist you.
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