Vulnerability in Linux Kernel: regulator: core: Fix enable_count imbalance with EXCLUSIVE_GET
Summary
GSD-2022-1003411: regulator: core: Fix enable_count imbalance with EXCLUSIVE_GET. Affects Kernel versions >= 5451781dadf85000665e0e2c3288e9e0f34b860a, < 81180f6d74c28ae91c3179715aa98e26fbde1c13. No fix is published. How to fix ↓
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Background
The Linux Kernel is a widely used open-source operating system that serves as the foundation for various Linux distributions. It provides essential functionality for managing hardware resources and facilitating communication between software and hardware components. The regulator subsystem within the Linux Kernel is responsible for controlling voltage and current regulators, ensuring proper power management for devices. However, a vulnerability has been discovered in the regulator core, specifically related to enable_count imbalance with EXCLUSIVE_GET.
Vulnerability Detail
The vulnerability in the regulator core of the Linux Kernel arises from an enable_count imbalance when using EXCLUSIVE_GET. This imbalance can lead to unexpected behavior and potential security risks. Attackers may exploit this vulnerability to manipulate power management settings, potentially causing system instability or unauthorized access to sensitive information. The vulnerability was introduced in version v5.0 of the Linux Kernel and has been fixed in version v5.15.46.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been mentioned for this vulnerability.
Conclusion
In conclusion, a vulnerability has been identified in the regulator core of the Linux Kernel, which can result in enable_count imbalance with EXCLUSIVE_GET. It is crucial to update the Linux Kernel to version v5.15.46 or later to mitigate the risk. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can potentially lead to system instability and unauthorized access to sensitive information.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground and it will provide real-time alerts for open-source vulnerabilities.
At the time of this report, no known exploits for this vulnerability have been disclosed.
Updating the Linux Kernel to the fixed version is the recommended approach to mitigate the risk. However, if updating is not immediately feasible, it is advisable to follow general security best practices such as restricting access to vulnerable systems and monitoring for any suspicious activity.
You can find more information about this vulnerability in the official Linux Kernel repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and the Cloud Security Alliance GSD database (https://github.com/cloudsecurityalliance/gsd-database).
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