Re: [PATCH v2] exec: load_script: Allow interpreter argument truncation

[Linus Torvalds]

On Thu, Feb 14, 2019 at 10:10 AM Kees Cook <keescook@xxxxxxxxxxxx> wrote:>
> We certainly can, but we'll still need to fix the "don't exec a
> truncated interpreter path" problem (which this fixes).
>
> I'm happy to do it as two steps instead: revert, then a separate fix
> to land in the merge window?

I think that's better. It should also be fairly easy: just look for
whitespace in the truncated output (in the place where we already
check for the "oh, we truncated")

It's even possible that somebody depends on a truncated interpreter
executable name. Unlikely, but possiible. So I'd rather just revert,
and re-try the smaller approach for 5.1.

               Linus