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

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Message-ID: <CAHk-=wjbNaTu+ktipPdM=_7PEmQ=-ue08zShjDASCsYSTzo1Mw@mail.gmail.com>
Date:   Mon, 18 Feb 2019 16:52:05 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Kees Cook <keescook@...omium.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 4:36 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.

               Linus