ARM: mmp: Fix failure to remove sram device in Kernel
Summary
GSD-2022-1001775: ARM: mmp: Fix failure to remove sram device. Affects Kernel versions < 4ab0293c961b75f914d05c9ed67fbb137315955a. No fix is published. How to fix ↓
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Background
The Kernel is a fundamental component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential functionalities, such as process management, memory management, and device drivers. The vulnerability in question affects the ARM mmp subsystem within the Kernel. The mmp subsystem is responsible for managing the memory and peripherals of ARM-based Marvell processors. This vulnerability specifically relates to the failure to remove a sram device, which can have potential security implications.
Vulnerability Detail
The vulnerability arises from a flaw in the ARM mmp subsystem, where the removal of a sram device is not properly handled. This can lead to the persistence of the device, even after it should have been removed. An attacker with access to the affected system could potentially exploit this vulnerability to gain unauthorized access, escalate privileges, or perform other malicious activities. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been addressed in the Linux Kernel version v5.15.33 by commit 4ab0293c961b75f914d05c9ed67fbb137315955a.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Kernel to version v5.15.33 or later. This can be done by obtaining the updated Kernel source code from the official Linux Kernel repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and compiling it for the target system. Alternatively, users can wait for their Linux distribution to provide an updated package containing the fixed Kernel version.
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Workaround
There is no specific workaround mentioned for this vulnerability. The recommended approach is to apply the fix by updating the Kernel to the patched version.
Conclusion
In conclusion, the ARM mmp subsystem in the Kernel is vulnerable to a flaw that allows the persistence of a sram device even after it should have been removed. This vulnerability has the potential to be exploited by attackers. It is crucial to update the Kernel to version v5.15.33 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Kernel is a crucial component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential functionalities, such as process management, memory management, and device drivers.
The ARM mmp subsystem is responsible for managing the memory and peripherals of ARM-based Marvell processors. It is a part of the Kernel.
The impact of this vulnerability is not yet proven. However, it could potentially allow an attacker to gain unauthorized access, escalate privileges, or perform other malicious activities.
To fix this vulnerability, it is recommended to update the Kernel to version v5.15.33 or later. This can be done by obtaining the updated Kernel source code from the official Linux Kernel repository and compiling it for the target system.
There is no specific workaround mentioned for this vulnerability. The recommended approach is to apply the fix by updating the Kernel to the patched version.
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