From: Kees Cook <keescook@chromium.org>
To: Justin Stitt <justinstitt@google.com>
Cc: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Lars Povlsen <lars.povlsen@microchip.com>,
Steen Hegelund <Steen.Hegelund@microchip.com>,
Daniel Machon <daniel.machon@microchip.com>,
UNGLinuxDriver@microchip.com, netdev@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org
Subject: Re: [PATCH] net: sparx5: replace deprecated strncpy with ethtool_sprintf
Date: Wed, 11 Oct 2023 14:47:06 -0700 [thread overview]
Message-ID: <202310111446.66E1E8A@keescook> (raw)
In-Reply-To: <20231011-strncpy-drivers-net-ethernet-microchip-sparx5-sparx5_ethtool-c-v1-1-410953d07f42@google.com>
On Wed, Oct 11, 2023 at 09:37:18PM +0000, Justin Stitt wrote:
> strncpy() is deprecated for use on NUL-terminated destination strings
> [1] and as such we should prefer more robust and less ambiguous string
> interfaces.
>
> ethtool_sprintf() is designed specifically for get_strings() usage.
> Let's replace strncpy() in favor of this more robust and easier to
> understand interface.
>
> Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1]
> Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2]
> Link: https://github.com/KSPP/linux/issues/90
> Cc: linux-hardening@vger.kernel.org
> Signed-off-by: Justin Stitt <justinstitt@google.com>
Another direct ethtool_sprintf() replacement. Thanks!
Reviewed-by: Kees Cook <keescook@chromium.org>
--
Kees Cook
next prev parent reply other threads:[~2023-10-11 21:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-11 21:37 [PATCH] net: sparx5: replace deprecated strncpy with ethtool_sprintf Justin Stitt
2023-10-11 21:47 ` Kees Cook [this message]
2023-10-14 0:30 ` patchwork-bot+netdevbpf
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