Re: [PATCH][net-next] ipv6: fix dereference of rt6_ex before null check error

From: David Miller
Date: Tue Oct 10 2017 - 13:54:52 EST


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

> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>
> 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@xxxxxxxxxxxxx>

Applied, thanks Colin.