extcon: Modify extcon device to be created after driver data is set
Summary
GSD-2022-1002550: extcon: Modify extcon device to be created after driver data is set. Affects Kernel versions < 033ec4e7e59ae5e1ef1e8c10bc6552926044ed1c. No fix is published. How to fix ↓
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Background
The extcon package is a component of the Linux Kernel that handles external connector events. It provides a framework for managing the state of external connectors, such as USB ports or headphone jacks, and notifies the system when a connector is plugged or unplugged. The extcon device is created during the initialization of the extcon driver and is responsible for managing the connection state of the external connectors. However, in versions prior to v5.18.4 of the Linux Kernel, the extcon device was created before the driver data was set, potentially leading to uninitialized data usage or other vulnerabilities.
Vulnerability Detail
The vulnerability in the extcon package arises from the incorrect order of operations during the creation of the extcon device. By creating the device before setting the driver data, uninitialized data may be used, leading to potential security vulnerabilities. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in Linux Kernel version v5.18.4 by commit 033ec4e7e59ae5e1ef1e8c10bc6552926044ed1c.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As this vulnerability has been fixed in Linux Kernel version v5.18.4, there is no specific workaround available. It is recommended to update to the fixed version of the kernel.
Conclusion
The extcon package in the Linux Kernel prior to v5.18.4 is vulnerable to a potential security issue where the extcon device is created before the driver data is set. This could result in uninitialized data usage or other vulnerabilities. It is recommended to update to Linux Kernel version v5.18.4 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The extcon package is a component of the Linux Kernel that handles external connector events and manages the state of external connectors.
The extcon device is created during the initialization of the extcon driver and is responsible for managing the connection state of external connectors.
The impact of this vulnerability is not yet proven. However, it could potentially lead to uninitialized data usage or other security vulnerabilities.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.18.4 or later.
As this vulnerability has been fixed in Linux Kernel version v5.18.4, there is no specific workaround available.
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