netdev - Re: [PATCH] wifi: nl80211: Avoid address calculations via out of bounds array indexing

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Message-ID: <9983345a-d590-4a78-94ca-6d96832860b1@quicinc.com>
Date: Tue, 30 Apr 2024 12:59:57 -0700
From: Jeff Johnson <quic_jjohnson@...cinc.com>
To: Johannes Berg <johannes@...solutions.net>,
        Kees Cook
	<keescook@...omium.org>
CC: Nathan Chancellor <nathan@...nel.org>,
        "David S. Miller"
	<davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
	<kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, <linux-wireless@...r.kernel.org>,
        <netdev@...r.kernel.org>,
        "Gustavo A. R.
 Silva" <gustavoars@...nel.org>,
        <linux-kernel@...r.kernel.org>, <linux-hardening@...r.kernel.org>
Subject: Re: [PATCH] wifi: nl80211: Avoid address calculations via out of
 bounds array indexing

On 4/30/2024 3:01 AM, Johannes Berg wrote:
> This really doesn't even seem right, shouldn't do pointer arithmetic on
> void pointers.

FWIW I argued this in the past in another context and Linus gave his opinion:

https://lore.kernel.org/all/CAHk-=whFKYMrF6euVvziW+drw7-yi1pYdf=uccnzJ8k09DoTXA@mail.gmail.com/