linux-kernel - Re: [PATCH] tty/vt: check allocation size in con_set

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Message-ID: <202006031213.22D9D875@keescook>
Date:   Wed, 3 Jun 2020 12:13:38 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Denis Efremov <efremov@...ux.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tty/vt: check allocation size in con_set_unimap()

On Wed, Jun 03, 2020 at 01:28:04PM +0300, Denis Efremov wrote:
> The vmemdup_user() function has no 2-factor argument form. Use array_size()
> to check for the overflow.
> 
> Cc: Kees Cook <keescook@...omium.org>
> Signed-off-by: Denis Efremov <efremov@...ux.com>

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

-- 
Kees Cook