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Linus Lüssing 04954b2dca batman-adv: Fix multicast TT issues with bogus ROAM flags 
[ Upstream commit a44ebeff6b ]

When a (broken) node wrongly sends multicast TT entries with a ROAM
flag then this causes any receiving node to drop all entries for the
same multicast MAC address announced by other nodes, leading to
packet loss.

Fix this DoS vector by only storing TT sync flags. For multicast TT
non-sync'ing flag bits like ROAM are unused so far anyway.

Fixes: 1d8ab8d3c1 ("batman-adv: Modified forwarding behaviour for multicast packets")
Reported-by: Leonardo Mörlein <me@irrelefant.net>
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2018-08-24 13:09:05 +02:00
..
Kconfig batman-adv: Allow selecting BATMAN V if CFG80211 is not built 2016-10-17 16:28:48 +02:00
Makefile batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bat_algo.c batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bat_algo.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bat_iv_ogm.c batman-adv: Fix bat_ogm_iv best gw refcnt after netlink dump 2018-08-24 13:09:05 +02:00
bat_iv_ogm.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bat_v.c batman-adv: Fix bat_v best gw refcnt after netlink dump 2018-08-24 13:09:05 +02:00
bat_v.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bat_v_elp.c networking: convert many more places to skb_put_zero() 2017-06-16 11:48:35 -04:00
bat_v_elp.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bat_v_ogm.c batman-adv: fix various spelling mistakes 2017-07-29 09:51:28 +02:00
bat_v_ogm.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bitarray.c batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bitarray.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bridge_loop_avoidance.c batman-adv: Fix netlink dumping of BLA backbones 2018-05-30 07:52:04 +02:00
bridge_loop_avoidance.h batman-adv: prevent multiple ARP replies sent by gateways if dat enabled 2017-03-22 10:30:53 +01:00
debugfs.c batman-adv: Fix includes for IS_ERR/ERR_PTR 2017-01-28 10:40:35 +01:00
debugfs.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
distributed-arp-table.c batman-adv: fix header size check in batadv_dbg_arp() 2018-05-30 07:52:16 +02:00
distributed-arp-table.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
fragmentation.c batman-adv: invalidate checksum on fragment reassembly 2018-05-30 07:52:03 +02:00
fragmentation.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
gateway_client.c batman-adv: fix packet loss for broadcasted DHCP packets to a server 2018-05-30 07:52:19 +02:00
gateway_client.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
gateway_common.c Here are two batman-adv bugfixes: 2017-03-16 12:05:38 -07:00
gateway_common.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
hard-interface.c batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
hard-interface.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
hash.c batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
hash.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
icmp_socket.c networking: make skb_put & friends return void pointers 2017-06-16 11:48:39 -04:00
icmp_socket.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
log.c batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
log.h batman-adv: Fix possible side-effects in _batadv_dbg 2017-03-16 21:14:52 +01:00
main.c batman-adv: restructure rebroadcast counter into forw_packet API 2017-03-26 12:46:44 +02:00
main.h batman-adv: Start new development cycle 2017-07-29 09:51:25 +02:00
multicast.c batman-adv: fix multicast-via-unicast transmission with AP isolation 2018-05-30 07:52:19 +02:00
multicast.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
netlink.c batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
netlink.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
network-coding.c batman-adv: Combine two seq_puts() calls into one call in batadv_nc_nodes_seq_print_text() 2017-05-23 12:09:15 +02:00
network-coding.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
originator.c batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
originator.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
packet.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
routing.c batman-adv: Fix skbuff rcsum on packet reroute 2018-05-30 07:52:16 +02:00
routing.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
send.c batman-adv: fix various spelling mistakes 2017-07-29 09:51:28 +02:00
send.h batman-adv: restructure rebroadcast counter into forw_packet API 2017-03-26 12:46:44 +02:00
soft-interface.c batman-adv: fix packet checksum in receive path 2018-05-30 07:52:03 +02:00
soft-interface.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
sysfs.c batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
sysfs.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
tp_meter.c networking: make skb_put & friends return void pointers 2017-06-16 11:48:39 -04:00
tp_meter.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
translation-table.c batman-adv: Fix multicast TT issues with bogus ROAM flags 2018-08-24 13:09:05 +02:00
translation-table.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
tvlv.c batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
tvlv.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
types.h batman-adv: fix TT sync flag inconsistencies 2017-07-31 11:17:38 +02:00