Vulnerability in Kernel: PM: core: keep irq flags in device_pm_check_callbacks()
Summary
GSD-2022-1002491: PM: core: keep irq flags in device_pm_check_callbacks(). Affects Kernel versions < 3ec80d52b9b74b9e691997632a543c73eddfeba0. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential functionalities and services to ensure the proper functioning of the system. One of its key features is power management, which allows devices to enter low-power states when not in use, conserving energy. However, a vulnerability has been discovered in the Kernel's power management core, specifically in the device_pm_check_callbacks() function.
Vulnerability Detail
The vulnerability in the Kernel's power management core arises from a failure to properly handle interrupt (irq) flags in the device_pm_check_callbacks() function. This flaw could potentially be exploited by an attacker to manipulate the irq flags, leading to various security issues. The exact impact and attack vectors are yet to be determined. It is important to note that this vulnerability has been fixed in the Linux Kernel version v4.9.311 by commit 3ec80d52b9b74b9e691997632a543c73eddfeba0.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No workaround has been mentioned for this vulnerability. It is advised to apply the fix by updating the Linux Kernel to the recommended version.
Conclusion
In conclusion, a vulnerability has been identified in the Kernel's power management core, specifically in the device_pm_check_callbacks() function. This vulnerability can be mitigated by updating the Linux Kernel to version v4.9.311 or later. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The Kernel is a critical component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential functionalities and services to ensure the proper functioning of the system.
Power management in the Kernel refers to the ability to control and optimize the power usage of devices connected to the system. It allows devices to enter low-power states when not in use, conserving energy.
The device_pm_check_callbacks() function is a part of the Kernel's power management core. It is responsible for checking and handling power management callbacks for devices.
Interrupt (irq) flags are used to manage and control interrupts in the system. They indicate the status of interrupts and can be manipulated to enable or disable specific interrupt handling.
To update the Linux Kernel, you can obtain the latest version from the official Linux Kernel repository and follow the installation instructions provided. It is important to ensure compatibility with your system configuration and dependencies.
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