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Xin Long 6c80138773 sctp: process duplicated strreset asoc request correctly 
This patch is to fix the replay attack issue for strreset asoc requests.

When a duplicated strreset asoc request is received, reply it with bad
seqno if it's seqno < asoc->strreset_inseq - 2, and reply it with the
result saved in asoc if it's seqno >= asoc->strreset_inseq - 2.

But note that if the result saved in asoc is performed, the sender's next
tsn and receiver's next tsn for the response chunk should be set. It's
safe to get them from asoc. Because if it's changed, which means the peer
has received the response already, the new response with wrong tsn won't
be accepted by peer.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2017-04-18 13:39:50 -04:00
..
Kconfig sctp: add the sctp_diag.c file 2016-04-15 17:29:36 -04:00
Makefile sctp: prepare asoc stream for stream reconf 2017-01-06 21:07:26 -05:00
associola.c sctp: get sock from transport in sctp_transport_update_pmtu 2017-04-05 07:20:06 -07:00
auth.c sctp: use IS_ENABLED() instead of checking for built-in or module 2016-09-10 21:19:11 -07:00
bind_addr.c sctp: not copying duplicate addrs to the assoc's bind address list 2016-12-20 14:15:45 -05:00
chunk.c sctp: add SCTP_PR_STREAM_STATUS sockopt for prsctp 2017-04-03 14:52:35 -07:00
debug.c net: sctp: fix array overrun read on sctp_timer_tbl 2017-01-24 15:24:35 -05:00
endpointola.c sctp: add reconf_enable in asoc ep and netns 2017-01-18 14:55:10 -05:00
input.c sctp: get sock from transport in sctp_transport_update_pmtu 2017-04-05 07:20:06 -07:00
inqueue.c sctp: rename WORD_TRUNC/ROUND macros 2016-09-22 03:13:26 -04:00
ipv6.c net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
objcnt.c sctp: prepare asoc stream for stream reconf 2017-01-06 21:07:26 -05:00
offload.c sctp: sctp gso should set feature with NETIF_F_SG when calling skb_segment 2017-01-25 12:28:33 -05:00
output.c sctp: get sock from transport in sctp_transport_update_pmtu 2017-04-05 07:20:06 -07:00
outqueue.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-04-06 08:24:51 -07:00
primitive.c sctp: add stream reconf primitive 2017-01-18 14:55:10 -05:00
probe.c net: sctp: Convert log timestamps to be y2038 safe 2016-03-01 17:18:44 -05:00
proc.c sctp: use right in and out stream cnt 2017-04-01 20:12:30 -07:00
protocol.c net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
sctp_diag.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-10-02 22:20:41 -04:00
sm_make_chunk.c sctp: alloc stream info when initializing asoc 2017-03-30 11:08:47 -07:00
sm_sideeffect.c sctp: flush out queue once assoc state falls into SHUTDOWN_PENDING 2017-02-20 10:26:09 -05:00
sm_statefuns.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-04-06 08:24:51 -07:00
sm_statetable.c sctp: add reconf chunk event 2017-02-19 18:17:59 -05:00
socket.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-04-15 21:16:30 -04:00
stream.c sctp: process duplicated strreset asoc request correctly 2017-04-18 13:39:50 -04:00
sysctl.c sctp: add get and set sockopt for reconf_enable 2017-03-12 23:22:24 -07:00
transport.c sctp: get sock from transport in sctp_transport_update_pmtu 2017-04-05 07:20:06 -07:00
tsnmap.c sctp: Fix FSF address in file headers 2013-12-06 12:37:56 -05:00
ulpevent.c sctp: add support for generating add stream change event notification 2017-03-12 23:22:23 -07:00
ulpqueue.c sctp: prepare asoc stream for stream reconf 2017-01-06 21:07:26 -05:00