linux-kernel - Re: [PATCH v5] exec: load_script: Do not exec truncated interpreter path

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Date:   Mon, 18 Feb 2019 16:59:37 -0800
From:   Kees Cook <keescook@...omium.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Samuel Dionne-Riel <samuel@...nne-riel.com>,
        Richard Weinberger <richard.weinberger@...il.com>,
        Graham Christensen <graham@...hamc.com>,
        Michal Hocko <mhocko@...e.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5] exec: load_script: Do not exec truncated interpreter path

On Mon, Feb 18, 2019 at 4:52 PM Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> On Mon, Feb 18, 2019 at 4:36 PM Kees Cook <keescook@...omium.org> wrote:
> >
> > This attempts the protection again, but allows arguments to
> > remain truncated. In an effort to improve readability, helper functions
> > and comments have been added.
>
> Applied directly, in the (maybe naive) belief that this can't possibly
> break anything, and let's just get it fixed for 5.0 rather than wait
> another release.
>
> Famous last words.

Eek. :)

-- 
Kees Cook