Vulnerability in Linux Kernel: PM: core: keep irq flags in device_pm_check_callbacks()
Summary
GSD-2022-1001795: PM: core: keep irq flags in device_pm_check_callbacks(). Affects Kernel versions < c29642ba72f87c0a3d7449f7db5d6d76a7ed53c3. No fix is published. How to fix ↓
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Background
The Linux Kernel is a widely used open-source operating system kernel that serves as the foundation for various Linux distributions. It provides essential functionality for managing hardware resources, device drivers, and system processes. The PM (Power Management) subsystem within the Linux Kernel is responsible for managing power-related operations, such as device suspend and resume. The device_pm_check_callbacks() function is a core component of the PM subsystem that checks and handles power management callbacks for devices. However, a vulnerability has been discovered in this function.
Vulnerability Detail
The vulnerability, identified as GSD-2022-1001795, exists in the device_pm_check_callbacks() function of the Linux Kernel. It is caused by a missing preservation of IRQ (Interrupt Request) flags during the execution of the function. This oversight can lead to potential race conditions and incorrect behavior when handling power management callbacks for devices. Although the impact and attack plausibility of this vulnerability have not been proven, it is crucial to address it to ensure the stability and security of the system.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been provided for this vulnerability.
Conclusion
In conclusion, a vulnerability has been identified in the device_pm_check_callbacks() function of the Linux Kernel. It is crucial to update the Linux Kernel to the fixed version or a subsequent release to mitigate the potential risks associated with this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Linux Kernel is an open-source operating system kernel that forms the core of various Linux distributions.
The PM (Power Management) subsystem in the Linux Kernel is responsible for managing power-related operations, such as device suspend and resume.
The device_pm_check_callbacks() function is a core component of the PM subsystem that checks and handles power management callbacks for devices.
The impact of this vulnerability is not yet proven, but it could potentially lead to race conditions and incorrect behavior when handling power management callbacks for devices.
To fix this vulnerability, update your Linux Kernel to at least version v5.15.33 or a subsequent release that includes the fix.
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