Commit fdcee2cb authored May 17, 2017 by Eric Dumazet Committed by David S. Miller May 18, 2017

sctp: do not inherit ipv6_{mc|ac|fl}_list from parent



SCTP needs fixes similar to 83eaddab ("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>

parent a3f96c47

net/sctp/ipv6.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -677,6 +677,9 @@ static struct sock sctp_v6_create_accept_sk(struct sock sk,
		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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