Vulnerability in Kernel: Retrieve all the PDOs instead of just the first 4
Summary
GSD-2021-1000312: usb: typec: ucsi: Retrieve all the PDOs instead of just the first 4. Affects Kernel versions >= 992a60ed0d5e312ce9a485c9e12097ac82ae4b3e, < e5366bea0277425e1868ba20eeb27c879d5a6e2d. 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 communication between hardware and software. It provides essential functionalities and services for the system's operation. The vulnerability in question affects the Kernel's USB Type-C subsystem (ucsi) and specifically relates to the retrieval of Power Delivery Objects (PDOs).
Vulnerability Detail
The vulnerability allows an attacker to retrieve only the first four PDOs instead of all available PDOs. This limitation can lead to potential security risks as the attacker may not have complete information about the power capabilities of the USB Type-C device. This could result in incorrect power negotiation and potentially compromise the system's stability or security. The vulnerability was introduced in version v5.8 of the Linux Kernel and has been fixed in version v5.10.38.
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
The vulnerability in the Kernel's USB Type-C subsystem (ucsi) that allows an attacker to retrieve only the first four Power Delivery Objects (PDOs) has been identified and fixed in version v5.10.38 of the Linux Kernel. It is crucial to update the Kernel to the latest version to mitigate the vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can potentially compromise the stability and security of the system by allowing an attacker to retrieve only a limited number of Power Delivery Objects (PDOs) from a USB Type-C device.
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 the software.
Yes, the vulnerability has been fixed in version v5.10.38 of the Linux Kernel. It is recommended to update to this version or a later version to mitigate the vulnerability.
The details regarding remote exploitation of this vulnerability have not been provided. However, it is always recommended to keep systems up to date with the latest security patches to minimize the risk of remote exploitation.
There is no information available regarding known instances of this vulnerability being exploited. However, it is important to apply the necessary security updates to protect against potential exploitation.
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