Deadlock Vulnerability in Linux Kernel
Summary
GSD-2022-1003206: drivers: usb: host: Fix deadlock in oxu_bus_suspend(). Affects Kernel versions < d888753872190abd18f68a7d77b9c7c367f0a7ab. No fix is published. How to fix ↓
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Background
The Linux Kernel is the core component of the Linux operating system, responsible for managing system resources and providing an interface for applications to interact with the hardware. It includes various device drivers to support different hardware components. One such driver is the USB host driver, which enables communication with USB devices connected to the system. However, a vulnerability has been discovered in the USB host driver that can lead to a deadlock situation.
Vulnerability Detail
The vulnerability, identified as GSD-2022-1003206, specifically affects the USB host driver in the Linux Kernel. The issue arises in the oxu_bus_suspend() function, which is responsible for suspending the USB bus. Due to a flaw in the implementation, a deadlock can occur when attempting to suspend the bus. This deadlock can result in a system freeze or unresponsiveness, potentially leading to a denial-of-service (DoS) condition. The vulnerability has been addressed in Linux Kernel version v5.15.47 through the commit d888753872190abd18f68a7d77b9c7c367f0a7ab.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can avoid triggering the deadlock by not suspending the USB bus. However, this may not be a feasible solution in scenarios where USB bus suspension is required for power management or other purposes.
Conclusion
The deadlock vulnerability in the USB host driver of the Linux Kernel can lead to system freeze or unresponsiveness, potentially causing a denial-of-service (DoS) condition. It is crucial to update the Linux Kernel to version v5.15.47 or later to mitigate this vulnerability. If you need further assistance or support in addressing this vulnerability, please contact DevNack.com.
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FAQ
The vulnerability can lead to a deadlock situation in the USB host driver, resulting in system freeze or unresponsiveness. This can potentially cause a denial-of-service (DoS) condition.
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 and the Vulert Playground will analyze it for any open-source vulnerabilities, including this one.
Yes, the vulnerability has been fixed in Linux Kernel version v5.15.47 through the commit d888753872190abd18f68a7d77b9c7c367f0a7ab. Updating to this version or a later one will address the issue.
As a temporary measure, you can avoid suspending the USB bus to prevent triggering the deadlock. However, this may not be a viable solution in scenarios where USB bus suspension is necessary.
You can refer to the vulnerability details in the GSD database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1003xxx/GSD-2022-1003206.json) for more information, including the specific commit that fixes the vulnerability.
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