linux-hardening - Re: [PATCH] ath6kl: replace deprecated strncpy with memcpy

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Message-ID: <169761797261.48072.1075267340140520177.kvalo@kernel.org>
Date: Wed, 18 Oct 2023 08:32:54 +0000 (UTC)
From: Kalle Valo <kvalo@...nel.org>
To: Justin Stitt <justinstitt@...gle.com>
Cc: linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-hardening@...r.kernel.org, Justin Stitt <justinstitt@...gle.com>
Subject: Re: [PATCH] ath6kl: replace deprecated strncpy with memcpy

Justin Stitt <justinstitt@...gle.com> wrote:

> strncpy() is deprecated for use on NUL-terminated destination strings
> [1] and as such we should prefer more robust and less ambiguous
> interfaces.
> 
> The affected code's purpose is to truncate strings that are too long
> with "..." like:
> foobar -> fo...
> 
> The lengths have been carefully calculated and as such this has decayed
> to a simple byte copy from one buffer to another -- let's use memcpy().
> 
> Note: build-tested only.
> 
> Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1]
> Link: https://github.com/KSPP/linux/issues/90
> Cc: linux-hardening@...r.kernel.org
> Signed-off-by: Justin Stitt <justinstitt@...gle.com>
> Signed-off-by: Kalle Valo <quic_kvalo@...cinc.com>

Patch applied to ath-next branch of ath.git, thanks.

40990961d983 wifi: ath6kl: replace deprecated strncpy with memcpy

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20231013-strncpy-drivers-net-wireless-ath-ath6kl-init-c-v1-1-d69c599b49a9@google.com/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches