Fix deadlock in oxu_bus_suspend() in Linux Kernel
Summary
GSD-2022-1002555: drivers: usb: host: Fix deadlock in oxu_bus_suspend(). Affects Kernel versions < b97aae8b43b718314012e8170b7e03dbfd2e7677. No fix is published. How to fix ↓
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Background
The Linux Kernel is the core component of the Linux operating system. It provides essential functionality for managing hardware, running processes, and facilitating communication between software and hardware components. The USB host driver in the Linux Kernel is responsible for managing USB devices connected to the system. One of the functions in this driver, oxu_bus_suspend(), is susceptible to a deadlock vulnerability.
Vulnerability Detail
The oxu_bus_suspend() function in the USB host driver of the Linux Kernel is vulnerable to a deadlock. This vulnerability can be triggered when suspending the USB bus, leading to a system deadlock. An attacker with physical access to the system and the ability to suspend the USB bus could exploit this vulnerability to cause a denial-of-service (DoS) condition. The vulnerability has been fixed in Linux Kernel version v5.18.4.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is recommended to apply the fix by updating the Linux Kernel.
Conclusion
The oxu_bus_suspend() function in the USB host driver of the Linux Kernel is vulnerable to a deadlock. It can be exploited by an attacker with physical access to the system and the ability to suspend the USB bus, leading to a system deadlock and denial-of-service (DoS) condition. It is recommended to update the Linux Kernel to 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 vulnerability can lead to a system deadlock, causing a denial-of-service (DoS) condition.
An attacker with physical access to the system and the ability to suspend the USB bus can exploit this vulnerability.
There is no known exploit for this vulnerability at the moment.
Yes, this vulnerability has been fixed in Linux Kernel version v5.18.4.
To update the Linux Kernel, you can download the updated kernel source code from the official Linux Kernel repository and compile it for your system. Alternatively, you can wait for your Linux distribution to provide an updated package.
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