I don't think bug 1847382 has much relation to this bug, as that requires a very different strategy to exploit (merely crashing the browser is easy with that one, but code execution is unproven and may be difficult).
Bug 1872920 Comment 18 Edit History
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I don't think bug 1847382 has much relation to this bug, as that requires a very different strategy to exploit (merely crashing the browser is easy with that one, but code execution in the VM guest is unproven and may be difficult, and then proceeding to execute code on the VM host is unproven and may also be difficult, as Microsoft has taken significant measures towards securing Windows graphics drivers - I don't doubt there are bugs, but they may be difficult to exploit).