Vulnerability in Kernel: iommu/arm-smmu
Summary
GSD-2022-1002916: iommu/arm-smmu: fix possible null-ptr-deref in arm_smmu_device_probe(). Affects Kernel versions < 80776a71340f57d6a4952635fc89f0342072f3ca. 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 interfaces with hardware devices. It includes various subsystems, such as the Input/Output Memory Management Unit (IOMMU), which manages memory access and device virtualization. The arm-smmu module within the IOMMU subsystem is responsible for handling memory management for ARM-based systems. However, a vulnerability has been identified in the arm_smmu_device_probe() function, which could lead to a null pointer dereference.
Vulnerability Detail
The vulnerability in the arm_smmu_device_probe() function of the arm-smmu module could result in a null pointer dereference. This could potentially be exploited by an attacker to cause a denial-of-service condition or execute arbitrary code with kernel privileges. The vulnerability arises from a lack of proper validation of input parameters, allowing a null pointer to be dereferenced. Successful exploitation of this vulnerability could lead to system instability or compromise.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to apply the provided fix by updating the Kernel to a version that includes the necessary patch.
Conclusion
In conclusion, the vulnerability in the arm-smmu module of the Kernel could lead to a null pointer dereference, potentially enabling an attacker to cause a denial-of-service condition or execute arbitrary code with kernel privileges. It is crucial to update the Kernel to a version that includes the fix provided in commit 80776a71340f57d6a4952635fc89f0342072f3ca. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability could potentially allow an attacker to cause a denial-of-service condition or execute arbitrary code with kernel privileges, leading to system instability or compromise.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities without requiring access to the code or installation.
No, there is no known workaround for this vulnerability. It is crucial to update the Kernel to a version that includes the fix.
The recommended solution is to update the Linux Kernel to version v5.17.15 or later, which includes the necessary fix for this vulnerability.
You can find more information about this vulnerability in the GSD-2022-1002916 entry of the GSD database maintained by the Cloud Security Alliance. The link to the specific vulnerability entry is available at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1002xxx/GSD-2022-1002916.json
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