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[PATCH 3.16 210/212] sctp: do not inherit ipv6_{mc|ac|fl}_list from parent

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  [PATCH 3.16 210/212] sctp: do not inherit ipv6_{mc|ac|fl}_list  from parent Ben Hutchings <ben@decadent.org.uk> - 2017-06-01 17:50 +0200

#1655271 — [PATCH 3.16 210/212] sctp: do not inherit ipv6_{mc|ac|fl}_list from parent

3.16.44-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Eric Dumazet <edumazet@google.com>

commit fdcee2cbb8438702ea1b328fb6e0ac5e9a40c7f8 upstream.

SCTP needs fixes similar to 83eaddab4378 ("ipv6/dccp: do not inherit
ipv6_mc_list from parent"), otherwise bad things can happen.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
 net/sctp/ipv6.c | 3 +++
 1 file changed, 3 insertions(+)

--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -659,6 +659,9 @@ static struct sock *sctp_v6_create_accep
 	newnp = inet6_sk(newsk);
 
 	memcpy(newnp, np, sizeof(struct ipv6_pinfo));
+	newnp->ipv6_mc_list = NULL;
+	newnp->ipv6_ac_list = NULL;
+	newnp->ipv6_fl_list = NULL;
 
 	rcu_read_lock();
 	opt = rcu_dereference(np->opt);

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