zlacker

[parent] [thread] 3 comments
1. emilfi+(OP)[view] [source] 2017-07-11 16:19:33
I don't understand the hate for USB.

The machine does nothing with them unless you give them permission to do something.

replies(1): >>wuch+F3
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2. wuch+F3[view] [source] 2017-07-11 16:39:50
>>emilfi+(OP)
Problem is not what your machine does with an USB device, but what the USB device does with machine [0].

[0] https://security.stackexchange.com/questions/118854/attacks-...

replies(1): >>floatb+Xl
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3. floatb+Xl[view] [source] [discussion] 2017-07-11 18:35:52
>>wuch+F3
> USB 3.1 does support DMA

Holy shit where did that come from o_0

> USB 3.0 runs as a binary blob in the BIOS

Is that running on the chipset or the CPU?

replies(1): >>qb45+dp1
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4. qb45+dp1[view] [source] [discussion] 2017-07-12 07:37:36
>>floatb+Xl
I'm under impression that USB 3.1 DMA is a semi-fake news viral meme.

https://news.ycombinator.com/item?id=14669377

> Is that running on the chipset or the CPU?

USB 3.x controllers are more complex than predecessors and typically run some firmware on the controller chip to implement functionality which used to be implemented in the OS drivers.

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