CVE-2024-46675

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> usb: dwc3: core: Prevent USB core invalid event buffer address access<br /> <br /> This commit addresses an issue where the USB core could access an<br /> invalid event buffer address during runtime suspend, potentially causing<br /> SMMU faults and other memory issues in Exynos platforms. The problem<br /> arises from the following sequence.<br /> 1. In dwc3_gadget_suspend, there is a chance of a timeout when<br /> moving the USB core to the halt state after clearing the<br /> run/stop bit by software.<br /> 2. In dwc3_core_exit, the event buffer is cleared regardless of<br /> the USB core&amp;#39;s status, which may lead to an SMMU faults and<br /> other memory issues. if the USB core tries to access the event<br /> buffer address.<br /> <br /> To prevent this hardware quirk on Exynos platforms, this commit ensures<br /> that the event buffer address is not cleared by software when the USB<br /> core is active during runtime suspend by checking its status before<br /> clearing the buffer address.