Date: Thu, 22 Aug 2019 20:33:54 +0100 From: Eddie Chapman <eddie@...k.net> To: oss-security@...ts.openwall.com Subject: Re: Linux kernel: multiple vulnerabilities in the USB subsystem x2 On 22/08/2019 20:00, Perry E. Metzger wrote: > You can argue anything you like. Power charging points have popped up > around the world, and you're not in a position to stop > them. Furthermore, I'll note that over the air exploitable bugs in > things like WiFi stacks and Bluetooth stacks have also appeared over > time; perhaps it's foolish to have your phone on at all, and yet > people will continue to turn their phones on, and even to use them. > > Perry Well, I certainly am not deluded enough to think I have the power to stop power charging points popping up everywhere :-) Or to stop people making mistakes. Just because something is possible and everyone else does it doesn't make something less stupid. It's a similar principle with wifi/bluetooth, which is why I avoid connecting even to a family member's wifi access point unless it's absolutely necessary. But USB is a physical interface directly into a device's circuitry, I think that carries more risk than radio. ok, usb 2.0 is only 2 x power and 2 x data, but radio waves are at least filtered somewhat after hitting an antenna. Physical interfaces on a device, on the other hand, the circuit designer does not usually design them "defensively" (apart from e.g. fuses on the power lines).
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