linux-hardening - Re: [PATCH] drivers/input: Remove all strcpy() uses in favor of strscpy()

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Sat, 07 Aug 2021 08:17:39 -0700
From:   Joe Perches <joe@...ches.com>
To:     Len Baker <len.baker@....com>, Kees Cook <keescook@...omium.org>
Cc:     "Russell King (Oracle)" <linux@...linux.org.uk>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Lee Jones <lee.jones@...aro.org>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, linux-hardening@...r.kernel.org,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers/input: Remove all strcpy() uses in favor of
 strscpy()

On Sat, 2021-08-07 at 16:02 +0200, Len Baker wrote:
> On Sun, Aug 01, 2021 at 09:44:33AM -0700, Kees Cook wrote:
[]
> > One thing is clear: replacing strlcpy() with strscpy() is probably the
> > easiest and best first step to cleaning up the proliferation of str*()
> > functions.
> 
> Thanks for all this info. I will work on it (clean up the proliferation
> of str*() functions).

btw:

It's not possible to sed as the return value is different,
but here is a cocci script that converts strlcpy to strscpy
when the return value is unused.

    @@
    expression e1, e2, e3;
    @@
    
    -       strlcpy(
    +       strscpy(
            e1, e2, e3);

This cocci script was used on sound/ awhile back.
see commit 75b1a8f9d62e.