linux-hardening - Re: [PATCH v4] drivers/iio: Remove all strcpy() uses

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Message-ID: <20210815081949.GA1664@titan>
Date:   Sun, 15 Aug 2021 10:19:49 +0200
From:   Len Baker <len.baker@....com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Len Baker <len.baker@....com>, Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        David Laight <David.Laight@...lab.com>,
        Kees Cook <keescook@...omium.org>,
        linux-hardening@...r.kernel.org,
        linux-iio <linux-iio@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4] drivers/iio: Remove all strcpy() uses

Hi Andy,

On Sat, Aug 14, 2021 at 10:36:18PM +0300, Andy Shevchenko wrote:
> On Sat, Aug 14, 2021 at 4:55 PM Len Baker <len.baker@....com> wrote:
> >
> > strcpy() performs no bounds checking on the destination buffer. This
> > could result in linear overflows beyond the end of the buffer, leading
> > to all kinds of misbehaviors. So, remove all the uses and add
> > devm_kstrdup() or devm_kasprintf() instead.
> >
> > This patch is an effort to clean up the proliferation of str*()
> > functions in the kernel and a previous step in the path to remove
> > the strcpy function from the kernel entirely [1].
> >
> > [1] https://github.com/KSPP/linux/issues/88
>
> Thank you very much for doing this!
> Now I like the result,
> Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>

Thank you too Andy (and folks) for your help on this.

Regards,
Len