Chromium Embedded Framework

Aardvark.Cef.Process.Core Shared Memory Handler: Unvalidated memcpy

The shared memory handler in Aardvark.Cef.Process.Core failed to validate that the `length` parameter passed from JavaScript did not exceed the destination buffer size before calling `memcpy`. This allowed a compromised Chromium renderer process to corrupt heap memory by supplying an oversized `handle->length` value to the `openMapping` function. The fix adds explicit bounds checking using `GetArrayBufferByteLength()` before the copy operation.