linux-kernel - Re: [PATCH 2/2] libertas: make lbs_ibss_join_existing() return error code on rates overflow

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Date:   Tue, 14 Jan 2020 15:44:30 +0200
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Nicolai Stange <nstange@...e.de>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Wen Huang <huangwenabc@...il.com>,
        libertas-dev@...ts.infradead.org, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Takashi Iwai <tiwai@...e.de>, Miroslav Benes <mbenes@...e.cz>
Subject: Re: [PATCH 2/2] libertas: make lbs_ibss_join_existing() return error code on rates overflow

Nicolai Stange <nstange@...e.de> writes:

> Commit e5e884b42639 ("libertas: Fix two buffer overflows at parsing bss
> descriptor") introduced a bounds check on the number of supplied rates to
> lbs_ibss_join_existing() and made it to return on overflow.
>
> However, the aforementioned commit doesn't set the return value accordingly
> and thus, lbs_ibss_join_existing() would return with zero even though it
> failed.
>
> Make lbs_ibss_join_existing return -EINVAL in case the bounds check on the
> number of supplied rates fails.
>
> Fixes: e5e884b42639 ("libertas: Fix two buffer overflows at parsing bss
>                       descriptor")

This should be in one line, I'll fix it during commit.

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