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linux/net/sctp
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Xin Long 9d02831e51 sctp: add vtag check in sctp_sf_ootb 
sctp_sf_ootb() is called when processing DATA chunk in closed state,
and many other places are also using it.

The vtag in the chunk's sctphdr should be verified, otherwise, as
later in chunk length check, it may send abort with the existent
asoc's vtag, which can be exploited by one to cook a malicious
chunk to terminate a SCTP asoc.

When fails to verify the vtag from the chunk, this patch sets asoc
to NULL, so that the abort will be made with the vtag from the
received chunk later.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-10-22 12:36:45 -07:00
..
associola.c sctp: enable PLPMTUD when the transport is ready 2021-06-22 11:28:52 -07:00
auth.c sctp: move the active_key update after sh_keys is added 2021-08-03 11:43:43 +01:00
bind_addr.c sctp: validate from_addr_param return 2021-06-28 15:34:50 -07:00
chunk.c net: sctp: chunk.c: delete duplicated word 2020-08-24 16:21:43 -07:00
debug.c sctp: add the probe timer in transport for PLPMTUD 2021-06-22 11:28:52 -07:00
diag.c net: Use nlmsg_unicast() instead of netlink_unicast() 2021-07-13 09:28:29 -07:00
endpointola.c sctp: get netns from asoc and ep base 2019-12-09 20:14:01 -08:00
input.c sctp: break out if skb_header_pointer returns NULL in sctp_rcv_ootb 2021-09-24 10:36:19 +01:00
inqueue.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 104 2019-05-24 17:39:00 +02:00
ipv6.c sctp: delete addr based on sin6_scope_id 2021-07-26 12:34:03 +01:00
Kconfig sctp: create udp4 sock and add its encap_rcv 2020-10-30 15:23:52 -07:00
Makefile
objcnt.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 104 2019-05-24 17:39:00 +02:00
offload.c sctp: remove the NETIF_F_SG flag before calling skb_segment 2021-01-16 19:05:59 -08:00
output.c sctp: do not update transport pathmtu if SPP_PMTUD_ENABLE is not set 2021-07-21 14:17:58 -07:00
outqueue.c sctp: do the basic send and recv for PLPMTUD probe 2021-06-22 11:28:52 -07:00
primitive.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 104 2019-05-24 17:39:00 +02:00
proc.c net: fix iteration for sctp transport seq_files 2021-02-08 10:15:49 -08:00
protocol.c sctp: move 198 addresses from unusable to private scope 2021-07-01 11:47:13 -07:00
sm_make_chunk.c sctp: account stream padding length for reconf chunk 2021-10-14 07:15:22 -07:00
sm_sideeffect.c sctp: add the probe timer in transport for PLPMTUD 2021-06-22 11:28:52 -07:00
sm_statefuns.c sctp: add vtag check in sctp_sf_ootb 2021-10-22 12:36:45 -07:00
sm_statetable.c sctp: add the probe timer in transport for PLPMTUD 2021-06-22 11:28:52 -07:00
socket.c sctp: trim optlen when it's a huge value in sctp_setsockopt 2021-07-18 09:47:29 -07:00
stream_interleave.c sctp: get netns from asoc and ep base 2019-12-09 20:14:01 -08:00
stream_sched_prio.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 104 2019-05-24 17:39:00 +02:00
stream_sched_rr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 104 2019-05-24 17:39:00 +02:00
stream_sched.c sctp: rename asoc intl_enable to asoc peer.intl_capable 2019-07-08 20:16:25 -07:00
stream.c net: sctp: Fix negotiation of the number of data streams. 2020-08-20 16:37:37 -07:00
sysctl.c sctp: add probe_interval in sysctl and sock/asoc/transport 2021-06-22 11:28:51 -07:00
transport.c sctp: send pmtu probe only if packet loss in Search Complete state 2021-07-25 23:06:02 +01:00
tsnmap.c net: sctp: trivial: fix typo in comment 2021-03-04 13:48:32 -08:00
ulpevent.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-31 17:48:46 -07:00
ulpqueue.c net: sctp: ulpqueue.c: delete duplicated word 2020-08-24 16:21:43 -07:00