String Overflow Vulnerability in SCPI genpd Driver in Linux Kernel
Summary
GSD-2021-1002619: firmware: arm_scpi: Fix string overflow in SCPI genpd driver. Affects Kernel versions >= 8bec4337ad4023b26de35d3b0c3a3b2735ffc5c7, < 639901b9429a3195e0fead981ed74b51f5f31538. 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 various Linux distributions. It provides essential functionality and interfaces for hardware, software, and user applications. The SCPI (System Control and Power Interface) genpd driver is responsible for managing power domains on ARM-based systems. Power domains control the power supply to different components of the system, allowing for efficient power management. However, a vulnerability has been discovered in the SCPI genpd driver that could potentially lead to a string overflow.
Vulnerability Detail
The vulnerability in the SCPI genpd driver arises from a string overflow issue. When processing certain strings, the driver fails to properly validate the length, leading to a buffer overflow. An attacker could exploit this vulnerability by providing a specially crafted string, potentially resulting in arbitrary code execution or a system crash. The impact and attack plausibility of this vulnerability have not been proven yet. The vulnerability was introduced in version v4.8 of the Linux Kernel and has been fixed in version v4.9.294.
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
In conclusion, a string overflow vulnerability has been discovered in the SCPI genpd driver in the Linux Kernel. This vulnerability could potentially lead to arbitrary code execution or system crashes. It is recommended to update the Linux Kernel to version v4.9.294 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can 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. Power domains control the power supply to different components of the system, allowing for efficient power management.
A string overflow vulnerability occurs when a program fails to properly validate the length of a string, allowing an attacker to overwrite adjacent memory locations. This can lead to various security issues, including arbitrary code execution or system crashes.
The impact of this vulnerability is not yet proven. However, if successfully exploited, it could potentially result in arbitrary code execution or a system crash.
You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities in software.
For more information about this vulnerability, you can refer to the vulnerability database entry at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1002xxx/GSD-2021-1002619.json.
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