linux-kernel - Re: [PATCH v6 3/8] ima: based on policy require signed kexec kernel images

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Message-ID: <CAGXu5jKDE0mPzi8RUhsViEwjhZX1=M-xU4DEa70tk3i2tN+rPA@mail.gmail.com>
Date:   Sat, 14 Jul 2018 19:21:38 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Mimi Zohar <zohar@...ux.vnet.ibm.com>
Cc:     linux-integrity <linux-integrity@...r.kernel.org>,
        linux-security-module <linux-security-module@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        "Luis R . Rodriguez" <mcgrof@...nel.org>,
        Eric Biederman <ebiederm@...ssion.com>,
        Kexec Mailing List <kexec@...ts.infradead.org>,
        Andres Rodriguez <andresx7@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH v6 3/8] ima: based on policy require signed kexec kernel images

On Fri, Jul 13, 2018 at 11:05 AM, Mimi Zohar <zohar@...ux.vnet.ibm.com> wrote:
> The original kexec_load syscall can not verify file signatures, nor can
> the kexec image be measured.  Based on policy, deny the kexec_load
> syscall.
>
> Signed-off-by: Mimi Zohar <zohar@...ux.vnet.ibm.com>
> Cc: Eric Biederman <ebiederm@...ssion.com>
> Cc: Kees Cook <keescook@...omium.org>

Reviewed-by: Kees Cook <keescook@...omium.org>

-Kees

-- 
Kees Cook
Pixel Security