From: Eric Dumazet <edumazet@google.com>
Date: Wed, 9 Dec 2015 15:25:06 +0000 (-0800)
Subject: ipv6: sctp: clone options to avoid use after free
X-Git-Tag: v3.2.75~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5c85649e8da22945f8e4616717543991a81bfba2;p=pandora-kernel.git

ipv6: sctp: clone options to avoid use after free

[ Upstream commit 9470e24f35ab81574da54e69df90c1eb4a96b43f ]

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@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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