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Date:   Mon, 22 May 2023 13:16:24 -0700
From:   Kees Cook <keescook@chromium.org>
To:     Azeem Shaikh <azeemshaikh38@gmail.com>
Cc:     Russell King <linux@armlinux.org.uk>,
        linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        dri-devel@lists.freedesktop.org
Subject: Re: [PATCH] drm/i2c: tda998x: Replace all non-returning strlcpy with
 strscpy
Message-ID: <202305221316.C0D13F1@keescook>
References: <20230522155350.2337029-1-azeemshaikh38@gmail.com>
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In-Reply-To: <20230522155350.2337029-1-azeemshaikh38@gmail.com>
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On Mon, May 22, 2023 at 03:53:50PM +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