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Commit a2eeacc8 authored by Xin Long's avatar Xin Long Committed by David S. Miller
Browse files

sctp: check asoc peer.asconf_capable before processing asconf 



asconf chunks should be dropped when the asoc doesn't support
asconf feature.

Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bb2ded26

net/sctp/sm_statefuns.c

+4 −2
Original line number Diff line number Diff line
@@ -3721,7 +3721,8 @@ enum sctp_disposition sctp_sf_do_asconf(struct net *net, 
	 * is received unauthenticated it MUST be silently discarded as

	 * described in [I-D.ietf-tsvwg-sctp-auth].

	 */

	if (!net->sctp.addip_noauth && !chunk->auth)

	if (!asoc->peer.asconf_capable ||

	    (!net->sctp.addip_noauth && !chunk->auth))

		return sctp_sf_discard_chunk(net, ep, asoc, type, arg,

					     commands);
@@ -3863,7 +3864,8 @@ enum sctp_disposition sctp_sf_do_asconf_ack(struct net *net, 
	 * is received unauthenticated it MUST be silently discarded as

	 * described in [I-D.ietf-tsvwg-sctp-auth].

	 */

	if (!net->sctp.addip_noauth && !asconf_ack->auth)

	if (!asoc->peer.asconf_capable ||

	    (!net->sctp.addip_noauth && !asconf_ack->auth))

		return sctp_sf_discard_chunk(net, ep, asoc, type, arg,

					     commands);