Re: s/party/hack like it's 1999

[Florian Weimer <fw () deneb enyo de>]

* Greg KH:

> On Mon, Sep 21, 2015 at 04:43:46PM +0000, David Holland wrote:
> > I have been arguing for years (but without success) that vt bomb
> > injection needs to be blocked in the tty driver. This problem
> > (corruption of concurrent UTF-8 streams) needs to be too, as a matter
> > of correctness and not even security.
>
> How exactly would a tty driver "block" anything like this?

Avoiding in-band signaling in the first place. :-/

> A tty driver never looks at the data stream in the kernel, as that
> way lies madness...

Surely there is a way to prevent two writes from interleaving?  For
writes to files in O_APPEND mode, this already happens, doesn't it?