linux-kernel - Re: [PATCH][net-next] ipv6: fix dereference of rt6

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Date:   Tue, 10 Oct 2017 10:54:47 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     colin.king@...onical.com
Cc:     kuznet@....inr.ac.ru, yoshfuji@...ux-ipv6.org,
        netdev@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH][net-next] ipv6: fix dereference of rt6_ex before null
 check error

From: Colin King <colin.king@...onical.com>
Date: Tue, 10 Oct 2017 18:01:16 +0100

> From: Colin Ian King <colin.king@...onical.com>
> 
> Currently rt6_ex is being dereferenced before it is null checked
> hence there is a possible null dereference bug. Fix this by only
> dereferencing rt6_ex after it has been null checked.
> 
> Detected by CoverityScan, CID#1457749 ("Dereference before null check")
> 
> Fixes: 81eb8447daae ("ipv6: take care of rt6_stats")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

Applied, thanks Colin.