Fix for vulnerability in USB PHY access after release

CVE-2024-50269

What is CVE-2024-50269?

A vulnerability in the Linux kernel's Sunxi MUSB driver allows for accessing a USB PHY after it has been released. This issue arises during the registration and unregistration process of the platform driver. Specifically, when the driver is registered again, it attempts to use the PHY that was already released in a previous operation, leading to potential undefined behavior or system instability. The vulnerability has been addressed by reverting a previous commit that incorrectly released the USB PHY.

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References