Vulnerability in iommu/omap Package: NULL Pointer Dereference
Summary
GSD-2022-1001010: iommu/omap: Fix regression in probe for NULL pointer dereference. Affects Kernel versions >= 6785eb9105e3363aa51408c700a55e8b5f88fcf6, < 1d89f2b9eadbcf3ce93c6d7238f68299a1f84968. No fix is published. How to fix ↓
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Background
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 accesses between devices and the CPU, ensuring data integrity and security. The iommu/omap package is widely used in Linux-based systems to enable efficient and secure device communication. However, a vulnerability has been discovered in the package that can lead to a NULL pointer dereference, potentially resulting in system crashes or privilege escalation attacks.
Vulnerability Detail
The vulnerability in the iommu/omap package is caused by a regression introduced in version v5.8 of the Linux Kernel. The issue arises during the probe process, where a NULL pointer dereference can occur. An attacker could exploit this vulnerability by sending specially crafted input to a vulnerable system, triggering the NULL pointer dereference and potentially crashing the system or gaining elevated privileges. The impact and attack plausibility of this vulnerability have not been proven yet. The vulnerability has been fixed in Linux Kernel version v5.17.3 by commit 1d89f2b9eadbcf3ce93c6d7238f68299a1f84968.
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, which can lead to system crashes or privilege escalation attacks. It is crucial to update the Linux Kernel to version v5.17.3 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.
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 or security vulnerabilities.
An attacker can exploit this vulnerability by sending specially crafted input to a vulnerable system, triggering a NULL pointer dereference and potentially crashing the system or gaining elevated privileges.
No, the impact and attack plausibility of this vulnerability have not been proven yet.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.17.3 or later.
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