Vulnerability in Kernel Package: xhci - Preventing Futile URB Re-submissions
Summary
GSD-2022-1000795: xhci: Prevent futile URB re-submissions due to incorrect return value. Affects Kernel versions >= 203a86613fb3bf2767335659513fa98563a3eb71, < ce94606060d7f4306774d919fd219546c589c56a. No fix is published. How to fix ↓
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Background
The Kernel package is a crucial component of the Linux operating system, responsible for managing the system's core functions. It provides an interface between the hardware and software layers, allowing applications to communicate with the underlying system resources. The xhci module within the Kernel package specifically handles USB host controller drivers. It enables the system to interact with USB devices, facilitating data transfer and device management. However, a vulnerability has been identified in the xhci module, which can lead to futile URB (USB Request Block) re-submissions due to an incorrect return value.
Vulnerability Detail
The vulnerability in the xhci module arises from an incorrect return value, which causes futile URB re-submissions. URBs are used to send requests to USB devices and receive responses. When the return value is incorrect, the system mistakenly believes that the URB submission failed and attempts to re-submit it. This can result in unnecessary and potentially harmful repeated requests to the USB device. While the impact and attack plausibility of this vulnerability have not been proven, it is essential to address it to ensure the proper functioning and security of the system.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel package to version v5.15.26 or later. The fix for this issue was implemented in commit ce94606060d7f4306774d919fd219546c589c56a. Updating to the latest version will ensure that the incorrect return value is corrected, preventing futile URB re-submissions.
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Workaround
No specific workaround has been mentioned for this vulnerability. It is advised to follow the recommended fix by updating the Kernel package to the latest version.
Conclusion
In conclusion, the xhci module in the Kernel package is vulnerable to an issue that causes futile URB re-submissions due to an incorrect return value. To address this vulnerability, it is crucial to update the Kernel package to version v5.15.26 or later. This will ensure the correct handling of URB submissions and prevent any potential impact on system performance or security. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The Kernel package is a fundamental component of the Linux operating system, responsible for managing core system functions and providing an interface between hardware and software layers.
The xhci module is a part of the Kernel package that handles USB host controller drivers. It enables the system to interact with USB devices, facilitating data transfer and device management.
A URB (USB Request Block) is a data structure used to send requests to USB devices and receive responses. It contains information about the request type, data buffer, and other parameters.
Futile URB re-submissions refer to the unnecessary and potentially harmful repeated submissions of URBs. In the case of this vulnerability, the incorrect return value leads to the system mistakenly believing that the URB submission failed, triggering re-submissions.
The impact of this vulnerability is not yet proven. However, it has the potential to cause unnecessary repeated requests to USB devices, which can impact device performance and potentially lead to security risks.
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