linux-kernel - Re: [PATCH] net: sctp: fix array overrun read on sctp_timer

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Date:   Fri, 20 Jan 2017 11:26:26 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     colin.king@...onical.com
Cc:     vyasevich@...il.com, nhorman@...driver.com,
        linux-sctp@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: sctp: fix array overrun read on sctp_timer_tbl

From: Colin King <colin.king@...onical.com>
Date: Fri, 20 Jan 2017 13:01:57 +0000

> From: Colin Ian King <colin.king@...onical.com>
> 
> The comparison on the timeout can lead to an array overrun
> read on sctp_timer_tbl because of an off-by-one error. Fix
> this by using < instead of <= and also compare to the array
> size rather than SCTP_EVENT_TIMEOUT_MAX.
> 
> Fixes CoverityScan CID#1397639 ("Out-of-bounds read")
> 
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

Applied.