Uninitialized Value in da9121_assign_chip_model() in Kernel
Summary
GSD-2022-1003436: regulator: da9121: Fix uninit-value in da9121_assign_chip_model(). Affects Kernel versions >= f3fbd5566f6a8cdb7c48ab29bd1096205b7fbcaf, < be96baa0c79588084e0d7a4fa21c574cec9a57f4. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages the system's resources and facilitates communication between hardware and software. It provides essential functions, including device drivers, memory management, and process scheduling. The da9121 regulator driver is responsible for managing voltage regulators on devices that use the Dialog Semiconductor DA9121 chip. These regulators ensure stable power supply to various components of the device.
Vulnerability Detail
The da9121 regulator driver in the Kernel suffers from an uninitialized value issue in the da9121_assign_chip_model() function. This vulnerability was introduced in version v5.11 of the Kernel and fixed in version v5.15.46. An attacker could potentially exploit this vulnerability to cause a denial-of-service (DoS) condition or execute arbitrary code with kernel privileges. The uninitialized value could lead to incorrect behavior and potentially allow an attacker to manipulate the chip model, leading to system instability or unauthorized access.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can avoid potential exploitation of this vulnerability by disabling the da9121 regulator driver if it is not required for their specific hardware configuration. This can be achieved by blacklisting the driver module or removing it from the Kernel configuration. However, this workaround may result in the loss of functionality provided by the da9121 regulator driver.
Conclusion
The da9121 regulator driver in the Kernel is vulnerable to an uninitialized value issue in the da9121_assign_chip_model() function. This vulnerability can be mitigated by updating the Kernel to version v5.15.46 or later. Users can also consider disabling the da9121 regulator driver if it is not required for their hardware configuration. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability could allow an attacker to cause a denial-of-service (DoS) condition or execute arbitrary code with kernel privileges. It may also lead to system instability or unauthorized access.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Vulert analyzes the manifest file, such as package-lock.json, and provides real-time alerts for open-source vulnerabilities.
Yes, users can disable the da9121 regulator driver if it is not required for their hardware configuration. However, this may result in the loss of functionality provided by the driver.
To fix this vulnerability, update the Kernel to version v5.15.46 or later. The updated Kernel can be obtained from the official Linux Kernel repository.
There are no known instances of this vulnerability being exploited in the wild. However, it is important to apply the necessary updates to mitigate the risk.
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