Fix for event handling soft lockup in iommu/arm-smmu-v3
Summary
GSD-2022-1001405: iommu/arm-smmu-v3: fix event handling soft lockup. Affects Kernel versions < f42258fddea631bad727b3f4489ceb76a292f4dc. No fix is published. How to fix ↓
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Background
The iommu/arm-smmu-v3 is a component of the Linux Kernel that provides support for Input-Output Memory Management Units (IOMMUs) on ARM-based systems. It is responsible for managing memory access and translation between devices and the CPU. The arm-smmu-v3 module specifically handles event handling related to the IOMMU. This vulnerability affects the Linux Kernel.
Vulnerability Detail
The vulnerability in iommu/arm-smmu-v3 is related to event handling, which can lead to a soft lockup. A soft lockup occurs when a CPU is stuck in a loop or busy-waiting state, preventing it from executing other tasks. This vulnerability can be exploited by an attacker to cause a denial-of-service (DoS) condition or potentially execute arbitrary code. The issue has been fixed in Linux Kernel version v5.16.20 by commit f42258fddea631bad727b3f4489ceb76a292f4dc.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The iommu/arm-smmu-v3 vulnerability related to event handling soft lockup can lead to a denial-of-service (DoS) condition or potential code execution. It is crucial to update the Linux Kernel to version v5.16.20 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
This vulnerability can lead to a soft lockup, causing a denial-of-service (DoS) condition or potentially allowing an attacker to execute arbitrary code.
No specific workaround has been provided for this vulnerability. It is recommended to update to the fixed version of the Linux Kernel.
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 Vulert will analyze it for any open-source vulnerabilities, including this one.
The exact exploitability of this vulnerability is not mentioned in the provided information. However, it is always recommended to apply security patches and updates to mitigate potential risks.
You can refer to the vulnerability details in the GSD database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1001xxx/GSD-2022-1001405.json) for more information and references.
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