Re: [linux-usb-devel] Re: [Security] [vendor-sec] [BUG/PATCH/RFC]Oops while completing async USB via usbdevio

From: Linus Torvalds
Date: Fri Sep 30 2005 - 14:27:45 EST




On Fri, 30 Sep 2005, Chris Wright wrote:
>
> Sorry, I missed the thread up to this, but this looks fundamentally
> broken. The kill_proc_info_as_uid() idea is not sufficient because more
> than uid/euid are needed for permission check. There's capabilities and
> security labels.

Not for this particular USB use, there isn't. Since you can only send a
signal to yourself anyway, the uid/euid check is just testing that you're
still who you were.

Linus
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