linux-kernel - Re: [PATCH net] ipv6: sctp: clone options to avoid use after free

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Date:	Fri, 11 Dec 2015 20:19:16 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	edumazet@...gle.com, marcelo.leitner@...il.com, dvyukov@...gle.com,
	kuznet@....inr.ac.ru, jmorris@...ei.org, yoshfuji@...ux-ipv6.org,
	kaber@...sh.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, vyasevich@...il.com,
	nhorman@...driver.com, linux-sctp@...r.kernel.org,
	syzkaller@...glegroups.com, kcc@...gle.com, glider@...gle.com,
	sasha.levin@...cle.com
Subject: Re: [PATCH net] ipv6: sctp: clone options to avoid use after free

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Wed, 09 Dec 2015 07:25:06 -0800

> From: Eric Dumazet <edumazet@...gle.com>
> 
> SCTP is lacking proper np->opt cloning at accept() time.
> 
> TCP and DCCP use ipv6_dup_options() helper, do the same
> in SCTP.
> 
> We might later factorize this code in a common helper to avoid
> future mistakes.
> 
> Reported-by: Dmitry Vyukov <dvyukov@...gle.com>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied and queued up for -stable, thanks.
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