linux-kernel - Re: [PATCH v6 2/8] kexec: add call to LSM hook in original kexec

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Message-ID: <CAGXu5j+bRE7-Jq4Q+jcVOyZ3e1hy6kbpF5ctdmdQxuV+ri82hQ@mail.gmail.com>
Date:   Sat, 14 Jul 2018 19:14:24 -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 2/8] kexec: add call to LSM hook in original kexec_load syscall

On Fri, Jul 13, 2018 at 11:05 AM, Mimi Zohar <zohar@...ux.vnet.ibm.com> wrote:
> In order for LSMs and IMA-appraisal to differentiate between kexec_load
> and kexec_file_load syscalls, both the original and new syscalls must
> call an LSM hook.  This patch adds a call to security_kernel_load_data()
> in the original 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>
> Acked-by: Serge Hallyn <serge@...lyn.com>

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

-Kees

-- 
Kees Cook
Pixel Security