String Overflow Vulnerability in SCPI genpd Driver in Linux Kernel
Summary
GSD-2021-1002727: firmware: arm_scpi: Fix string overflow in SCPI genpd driver. Affects Kernel versions >= 8bec4337ad4023b26de35d3b0c3a3b2735ffc5c7, < 976389cbb16cee46847e5d06250a3a0b5506781e. No fix is published. How to fix ↓
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Background
The Linux Kernel is a widely used open-source operating system kernel that serves as the foundation for numerous Linux distributions. It provides essential functionality for hardware abstraction, process management, memory management, and device drivers. The SCPI (System Control and Power Interface) genpd driver is responsible for managing power domains on ARM-based systems. Power domains allow for fine-grained control of power consumption by enabling or disabling specific hardware components. However, a string overflow vulnerability has been discovered in the SCPI genpd driver, potentially leading to security issues.
Vulnerability Detail
The identified vulnerability in the SCPI genpd driver involves a string overflow. Specifically, there is a flaw in the handling of strings within the driver, which can result in a buffer overflow. An attacker could exploit this vulnerability by providing a specially crafted input, causing the driver to write beyond the bounds of a buffer. This could lead to arbitrary code execution, privilege escalation, or denial of service. 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
As a temporary workaround, users can disable the SCPI genpd driver if it is not essential for their system's functionality. However, this may result in the loss of power management capabilities provided by the driver. Disabling the driver can be achieved by modifying the kernel configuration or blacklisting the associated module.
Conclusion
In conclusion, a string overflow vulnerability has been identified in the SCPI genpd driver in the Linux Kernel. This vulnerability could potentially lead to arbitrary code execution, privilege escalation, or denial of service. It is crucial to update the kernel to the latest version to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The SCPI genpd driver is a component of the Linux Kernel that manages power domains on ARM-based systems. It allows for fine-grained control of power consumption by enabling or disabling specific hardware components.
A string overflow vulnerability occurs when a program writes more data into a buffer than it can hold, resulting in the overflow of adjacent memory locations. This can lead to memory corruption, arbitrary code execution, or other security issues.
An attacker can exploit this vulnerability by providing a specially crafted input to the SCPI genpd driver, causing it to write beyond the bounds of a buffer. This can potentially allow the attacker to execute arbitrary code, escalate privileges, or cause a denial of service.
The impact of this vulnerability can vary depending on the specific system and its configuration. However, potential consequences include arbitrary code execution, privilege escalation, or denial of service. The actual impact and attack plausibility have not been proven yet.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.15.11 or later. This update includes the necessary patch to address the string overflow vulnerability in the SCPI genpd driver.
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