linux-stable/net/sctp
Daniel Borkmann 3f96a53211 net: sctp: rfc4443: do not report ICMP redirects to user space
Adapt the same behaviour for SCTP as present in TCP for ICMP redirect
messages. For IPv6, RFC4443, section 2.4. says:

  ...
  (e) An ICMPv6 error message MUST NOT be originated as a result of
      receiving the following:
  ...
       (e.2) An ICMPv6 redirect message [IPv6-DISC].
  ...

Therefore, do not report an error to user space, just invoke dst's redirect
callback and leave, same for IPv4 as done in TCP as well. The implication
w/o having this patch could be that the reception of such packets would
generate a poll notification and in worst case it could even tear down the
whole connection. Therefore, stop updating sk_err on redirects.

Reported-by: Duan Jiong <duanj.fnst@cn.fujitsu.com>
Reported-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Suggested-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-16 21:40:15 -04:00
..
associola.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-08-16 15:37:26 -07:00
auth.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
bind_addr.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
chunk.c net: sctp: Fix data chunk fragmentation for MTU values which are not multiple of 4 2013-09-04 13:20:27 -04:00
command.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
debug.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
endpointola.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
input.c net: sctp: rfc4443: do not report ICMP redirects to user space 2013-09-16 21:40:15 -04:00
inqueue.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
ipv6.c net: sctp: rfc4443: do not report ICMP redirects to user space 2013-09-16 21:40:15 -04:00
Kconfig net: sctp: get rid of SCTP_DBG_TSNS entirely 2013-07-02 00:08:03 -07:00
Makefile
objcnt.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
output.c Revert "net: sctp: convert sctp_checksum_disable module param into sctp sysctl" 2013-08-09 13:09:41 -07:00
outqueue.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
primitive.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
probe.c net: sctp: probe: allow more advanced ingress filtering by mark 2013-09-03 21:44:11 -04:00
proc.c net: proc_fs: trivial: print UIDs as unsigned int 2013-08-15 14:37:46 -07:00
protocol.c Revert "net: sctp: convert sctp_checksum_disable module param into sctp sysctl" 2013-08-09 13:09:41 -07:00
sm_make_chunk.c net: sctp: sctp_verify_init: clean up mandatory checks and add comment 2013-08-29 15:54:48 -04:00
sm_sideeffect.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
sm_statefuns.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
sm_statetable.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
socket.c net: sctp: fix smatch warning in sctp_send_asconf_del_ip 2013-09-11 16:10:00 -04:00
ssnmap.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
sysctl.c Revert "net: sctp: convert sctp_checksum_disable module param into sctp sysctl" 2013-08-09 13:09:41 -07:00
transport.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-08-16 15:37:26 -07:00
tsnmap.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
ulpevent.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
ulpqueue.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00