jkitt.... Yeah, I know that Ethernet is capable of DMA.

But DMA is different from a DMA Attack

A DMA attack is when a hacker exploits a software error in the Ethernet 
firmware, and uses that to take over the device and issue malicious DMA attacks.

So I guess I'm asking whether any such software errors have been found in 
Ethernet firmware before.

Things like you could get with ordinary software, like buffer overflow, heap 
overflow etc.

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