Commit 1669d857 authored Jul 03, 2007 by Vlad Yasevich Committed by David S. Miller Jul 05, 2007

SCTP: Add scope_id validation for link-local binds



SCTP currently permits users to bind to link-local addresses,
but doesn't verify that the scope id specified at bind matches
the interface that the address is configured on.  It was report
that this can hang a system.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent f50f95ca

net/sctp/ipv6.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -844,6 +844,10 @@ static int sctp_inet6_bind_verify(struct sctp_sock opt, union sctp_addr addr)
		dev = dev_get_by_index(addr->v6.sin6_scope_id);
		if (!dev)
		return 0;
		if (!ipv6_chk_addr(&addr->v6.sin6_addr, dev, 0)) {
		dev_put(dev);
		return 0;
		}
		dev_put(dev);
		}
		af = opt->pf->af;