linux-hardening - Re: [PATCH] wcn36xx: Avoid memset() beyond end of struct field

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Date:   Tue, 22 Jun 2021 15:28:34 +0000 (UTC)
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     Kees Cook <keescook@...omium.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-kernel@...r.kernel.org,
        wcn36xx@...ts.infradead.org, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH] wcn36xx: Avoid memset() beyond end of struct field

Kees Cook <keescook@...omium.org> wrote:

> In preparation for FORTIFY_SOURCE performing compile-time and run-time
> field bounds checking for memset(), avoid intentionally writing across
> neighboring array fields.
> 
> Instead of writing past the end of the header to reach the rest of
> the body, replace the redundant function with existing macro to wipe
> struct contents and set field values. Additionally adjusts macro to add
> missing parens.
> 
> Signed-off-by: Kees Cook <keescook@...omium.org>
> Signed-off-by: Kalle Valo <kvalo@...eaurora.org>

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

d3a1a18ab034 wcn36xx: Avoid memset() beyond end of struct field

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20210617171058.3410494-1-keescook@chromium.org/

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