Kernel Vulnerability in ARM SCMI Powercap Driver of Linux

CVE-2023-53428

What is CVE-2023-53428?

A vulnerability has been identified within the ARM SCMI Powercap driver of the Linux kernel related to the registration and deregistration of powercap zones. The driver currently utilizes a recursive method to process zone hierarchies, which can potentially lead to kernel stack overflow in scenarios where the hierarchy is particularly deep. This issue arises during both the dynamic retrieval of powercap zones and their registration, necessitating a switch to an iterative approach using a dynamical stack structure to avoid stack overflow errors during operation.

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