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Date:   Thu, 11 May 2023 09:21:18 -0700
From:   Kees Cook <keescook@chromium.org>
To:     Azeem Shaikh <azeemshaikh38@gmail.com>
Cc:     Hans de Goede <hdegoede@redhat.com>,
        linux-hardening@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH] vboxsf: Replace all non-returning strlcpy with strscpy
Message-ID: <202305110921.B62DD1BB@keescook>
References: <20230510211146.3486600-1-azeemshaikh38@gmail.com>
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On Wed, May 10, 2023 at 09:11:46PM +0000, Azeem Shaikh wrote:
> strlcpy() reads the entire source buffer first.
> This read may exceed the destination size limit.
> This is both inefficient and can lead to linear read
> overflows if a source string is not NUL-terminated [1].
> In an effort to remove strlcpy() completely [2], replace
> strlcpy() here with strscpy().
> No return values were used, so direct replacement is safe.
> 
> [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
> [2] https://github.com/KSPP/linux/issues/89
> 
> Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>

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

-- 
Kees Cook