Vulnerability in Kernel: iommu/arm-smmu
Summary
GSD-2022-1003225: iommu/arm-smmu: fix possible null-ptr-deref in arm_smmu_device_probe(). Affects Kernel versions < 98dd53a92825747395649f54d23512a13c3ed471. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionality and acts as an interface between hardware and software. It includes various subsystems, one of which is the iommu/arm-smmu subsystem responsible for handling input-output memory management unit (IOMMU) operations on ARM-based systems. The arm-smmu device probe function within this subsystem is vulnerable to a potential null pointer dereference.
Vulnerability Detail
The vulnerability exists in the arm_smmu_device_probe() function of the iommu/arm-smmu subsystem in the Kernel. It may lead to a null pointer dereference, which can result in a system crash or potential privilege escalation if exploited by an attacker. The impact and attack plausibility of this vulnerability have not been proven yet. The vulnerability has been addressed in the Linux Kernel version v5.15.47 through commit 98dd53a92825747395649f54d23512a13c3ed471.
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 the iommu/arm-smmu subsystem of the Kernel has been addressed in the Linux Kernel version v5.15.47. It is crucial to update the Kernel to the recommended version or later to mitigate the risk associated with this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability can range from a system crash to potential privilege escalation if exploited by an attacker.
You can use Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert Playground allows you to analyze your application's manifest file, such as package-lock.json, without requiring access to the code or installation.
No known exploit for this vulnerability has been reported at this time.
The recommended mitigation is to update the Linux Kernel to version v5.15.47 or later, which includes the fix for this vulnerability.
You can find more information about this vulnerability in the GSD database entry: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1003xxx/GSD-2022-1003225.json
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