Vulnerability in Kernel: pinctrl: nomadik: Add missing of_node_put() in nmk_pinctrl_probe
Summary
GSD-2022-1002065: pinctrl: nomadik: Add missing of_node_put() in nmk_pinctrl_probe. Affects Kernel versions >= 32e67eee670e1254ee5ab41e2f454680acb9c17c, < 669b05ff43bd7ed684379c6e2006a6dad5127b71. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionalities and interfaces with hardware devices. It manages the system's resources and facilitates communication between software and hardware components. The pinctrl subsystem within the Kernel allows for the configuration and control of pin multiplexing and GPIOs on various platforms. The nomadik driver is responsible for handling pin control on Nomadik platforms. However, a vulnerability has been identified in the nomadik driver that can lead to potential security issues.
Vulnerability Detail
The vulnerability in the nomadik driver arises from a missing of_node_put() function call in the nmk_pinctrl_probe() function. This omission can result in a reference count leak, potentially leading to resource exhaustion and other security implications. An attacker may be able to exploit this vulnerability to cause a denial-of-service (DoS) condition or execute arbitrary code with elevated privileges. The vulnerability was introduced in version v3.9 of the Linux Kernel and has been fixed in version v5.10.110.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been provided for this vulnerability. It is advised to apply the recommended fix by updating the Linux Kernel to the patched version.
Conclusion
The vulnerability in the nomadik driver of the Kernel can lead to resource exhaustion and potential unauthorized code execution. It is crucial to update the Linux Kernel to version v5.10.110 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can potentially lead to resource exhaustion and may allow an attacker to execute arbitrary code with elevated privileges or cause a denial-of-service (DoS) condition.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) and the Vulert Playground will provide real-time alerts for open-source vulnerabilities.
At the time of this report, there is no known exploit for this vulnerability. However, it is crucial to apply the recommended fix to mitigate any potential risks.
Yes, this vulnerability can be exploited remotely if an attacker can gain access to the affected system.
If you are unable to update the Kernel immediately, it is recommended to implement other security measures such as network segmentation, access controls, and monitoring to reduce the risk of exploitation.
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