Vulnerability in iommu/omap Package: Null Pointer Dereference
Summary
GSD-2022-1001975: iommu/omap: Fix regression in probe for NULL pointer dereference. Affects Kernel versions >= 6785eb9105e3363aa51408c700a55e8b5f88fcf6, < bd905fed87ce01ac010011bb8f44ed0140116ceb. No fix is published. How to fix ↓
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Background
The iommu/omap package is a component of the Linux Kernel, which provides support for Input-Output Memory Management Units (IOMMUs) on OMAP-based systems. IOMMUs are responsible for managing memory access and translation between devices and the CPU. The iommu/omap package is crucial for ensuring secure and efficient data transfers between devices and the CPU on OMAP-based systems.
Vulnerability Detail
This vulnerability in the iommu/omap package is a regression introduced in version v5.8 of the Linux Kernel. It is caused by a NULL pointer dereference issue during the probe process. An attacker could exploit this vulnerability by sending specially crafted input to a vulnerable system, leading to a system crash or potential code execution with elevated privileges. The impact and attack plausibility of this vulnerability have not been proven yet.
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 iommu/omap package in the Linux Kernel is vulnerable to a NULL pointer dereference issue. This vulnerability can potentially lead to system crashes or code execution with elevated privileges. It is crucial to update the Linux Kernel to version v5.10.111 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The iommu/omap package is a component of the Linux Kernel that provides support for Input-Output Memory Management Units (IOMMUs) on OMAP-based systems. IOMMUs are responsible for managing memory access and translation between devices and the CPU.
A NULL pointer dereference occurs when a program attempts to access or manipulate data using a pointer that points to NULL (a memory address with no assigned value). This can lead to crashes, system instability, or potential security vulnerabilities.
An attacker can exploit this vulnerability by sending specially crafted input to a vulnerable system, triggering a NULL pointer dereference during the probe process. This can lead to a system crash or potential code execution with elevated privileges.
No, the impact and attack plausibility of this vulnerability have not been proven yet. However, it is still important to apply the provided fix to ensure the system is protected against potential exploits.
To fix this vulnerability, users should update their Linux Kernel to version v5.10.111 or later, which includes the necessary fix for the NULL pointer dereference issue in the iommu/omap package.
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