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Re: [PATCH v2] wifi: mac80211: Avoid address calculations via out of bounds array indexing

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To: Kenton Groombridge <concord@xxxxxxxxxx>
Subject: Re: [PATCH v2] wifi: mac80211: Avoid address calculations via out of bounds array indexing
From: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
Date: Wed, 29 May 2024 16:54:51 +0200
Cc: davem@xxxxxxxxxxxxx, edumazet@xxxxxxxxxx, kuba@xxxxxxxxxx, pabeni@xxxxxxxxxx, linux-wireless@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-hardening@xxxxxxxxxxxxxxx, Kees Cook <keescook@xxxxxxxxxxxx>
In-reply-to: <20240517145420.8891-1-concord@gentoo.org>
References: <20240517145420.8891-1-concord@gentoo.org>
User-agent: Evolution 3.50.4 (3.50.4-1.fc39)

On Fri, 2024-05-17 at 10:54 -0400, Kenton Groombridge wrote:
> req->n_channels must be set before req->channels[] can be used.
> 

I don't know why, but this patch breaks a number of hwsim test cases.

https://w1.fi/cgit/hostap/tree/tests/hwsim/

johannes

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