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a46182b002
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Kevin Cernekee a46182b002 net: igmp: Use correct source address on IGMPv3 reports 
Closing a multicast socket after the final IPv4 address is deleted
from an interface can generate a membership report that uses the
source IP from a different interface.  The following test script, run
from an isolated netns, reproduces the issue:

    #!/bin/bash

    ip link add dummy0 type dummy
    ip link add dummy1 type dummy
    ip link set dummy0 up
    ip link set dummy1 up
    ip addr add 10.1.1.1/24 dev dummy0
    ip addr add 192.168.99.99/24 dev dummy1

    tcpdump -U -i dummy0 &
    socat EXEC:"sleep 2" \
        UDP4-DATAGRAM:239.101.1.68:8889,ip-add-membership=239.0.1.68:10.1.1.1 &

    sleep 1
    ip addr del 10.1.1.1/24 dev dummy0
    sleep 5
    kill %tcpdump

RFC 3376 specifies that the report must be sent with a valid IP source
address from the destination subnet, or from address 0.0.0.0.  Add an
extra check to make sure this is the case.

Signed-off-by: Kevin Cernekee <cernekee@chromium.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-12-13 13:51:27 -05:00
..
6lowpan License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
9p make sock_alloc_file() do sock_release() on failures 2017-12-05 18:39:29 -05:00
802 treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
8021q Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-12 09:17:05 +09:00
appletalk treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
atm treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
ax25 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
batman-adv treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
bluetooth treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
bpf bpf: add meta pointer for direct access 2017-09-26 13:36:44 -07:00
bridge net: bridge: add vlan_tunnel to bridge port policies 2017-11-14 21:54:55 +09:00
caif License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
can treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
ceph We have a set of file locking improvements from Zheng, rbd rw/ro 2017-11-21 05:38:32 -10:00
core net: remove duplicate includes 2017-12-13 13:18:46 -05:00
dcb rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
dccp dccp: CVE-2017-8824: use-after-free in DCCP code 2017-12-05 18:08:53 -05:00
decnet treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
dns_resolver KEYS: Fix race between updating and finding a negative key 2017-10-18 09:12:40 +01:00
dsa net: remove duplicate includes 2017-12-13 13:18:46 -05:00
ethernet
hsr net: hsr: Convert timers to use timer_setup() 2017-10-25 13:00:27 +09:00
ieee802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
ife MAINTAINERS: Update Yotam's E-mail 2017-11-01 12:19:03 +09:00
ipv4 net: igmp: Use correct source address on IGMPv3 reports 2017-12-13 13:51:27 -05:00
ipv6 ipv6: mcast: better catch silly mtu values 2017-12-13 13:13:15 -05:00
ipx Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
iucv iucv: Convert sk_wmem_alloc accesses to refcount_t. 2017-07-03 02:31:22 -07:00
kcm make sock_alloc_file() do sock_release() on failures 2017-12-05 18:39:29 -05:00
key af_key: replace BUG_ON on WARN_ON in net_exit hook 2017-11-14 15:45:52 +09:00
l2tp l2tp: exit_net cleanup check added 2017-11-14 15:45:53 +09:00
l3mdev
lapb treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
llc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-11-15 11:56:19 -08:00
mac80211 mac80211: fix locking in ieee80211_sta_tear_down_BA_sessions 2017-12-11 10:50:00 +01:00
mac802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
mpls Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
ncsi treewide: setup_timer() -> timer_setup() (2 field) 2017-11-21 15:57:09 -08:00
netfilter net: remove duplicate includes 2017-12-13 13:18:46 -05:00
netlabel net/netlabel: Add list_next_rcu() in rcu_dereference(). 2017-11-18 10:32:41 +09:00
netlink netlink: Add netns check on taps 2017-12-11 11:58:18 -05:00
netrom treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
nfc treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
nsh openvswitch: enable NSH support 2017-11-08 16:12:33 +09:00
openvswitch openvswitch: fix the incorrect flow action alloc size 2017-11-26 18:34:59 -05:00
packet net/packet: fix a race in packet_bind() and packet_notifier() 2017-11-28 11:13:30 -05:00
phonet phonet: exit_net cleanup check added 2017-11-14 15:45:53 +09:00
psample MAINTAINERS: Update Yotam's E-mail 2017-11-01 12:19:03 +09:00
qrtr Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-10 10:00:18 +09:00
rds rds: Fix NULL pointer dereference in __rds_rdma_map 2017-12-06 15:44:27 -05:00
rfkill
rose treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
rxrpc rxrpc: Use correct netns source in rxrpc_release_sock() 2017-12-03 10:05:20 -05:00
sched net: remove duplicate includes 2017-12-13 13:18:46 -05:00
sctp sctp: make sure stream nums can match optlen in sctp_setsockopt_reset_streams 2017-12-11 14:08:21 -05:00
smc net/smc: Fix preinitialization of buf_desc in __smc_buf_create() 2017-11-24 01:33:34 +09:00
strparser strparser: Use delayed work instead of timer for msg timeout 2017-10-25 10:37:11 +09:00
sunrpc NFS client fixes for Linux 4.15-rc2 2017-12-01 20:04:20 -05:00
switchdev net: bridge: Add/del switchdev object on host join/leave 2017-11-10 13:41:40 +09:00
tipc tipc: eliminate potential memory leak 2017-12-13 13:44:36 -05:00
tls tls: don't override sk_write_space if tls_set_sw_offload fails. 2017-11-14 16:26:35 +09:00
unix Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
vmw_vsock VSOCK: fix outdated sk_state value in hvs_release() 2017-12-05 15:07:37 -05:00
wimax License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
wireless wireless: don't write C files on failures 2017-12-06 08:47:09 +01:00
x25 treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
xfrm treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
compat.c net: compat: assert the size of cmsg copied in is as expected 2017-09-20 15:36:18 -07:00
Kconfig net: Remove CONFIG_NETFILTER_DEBUG and _ASSERT() macros. 2017-09-04 13:25:20 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
socket.c make sock_alloc_file() do sock_release() on failures 2017-12-05 18:39:29 -05:00
sysctl_net.c