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Cong Wang 6ddf081387 bonding: validate ip header before check IPPROTO_IGMP

[ Upstream commit 9d1bc24b52 ]

bond_xmit_roundrobin() checks for IGMP packets but it parses
the IP header even before checking skb->protocol.

We should validate the IP header with pskb_may_pull() before
using iph->protocol.

Reported-and-tested-by: syzbot+e5be16aa39ad6e755391@syzkaller.appspotmail.com
Fixes: a2fd940f4c ("bonding: fix broken multicast with round-robin mode")
Cc: Jay Vosburgh <j.vosburgh@gmail.com>
Cc: Veaceslav Falico <vfalico@gmail.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2019-07-26 09:12:49 +02:00

bond_3ad.c

bonding: count master 3ad stats separately

2019-01-24 22:18:48 -08:00

bond_alb.c

net: dev: Add extack argument to dev_set_mac_address()

2018-12-13 18:41:38 -08:00

bond_debugfs.c

bonding: convert to DEFINE_SHOW_ATTRIBUTE

2018-12-10 12:05:20 -08:00

bond_main.c

bonding: validate ip header before check IPPROTO_IGMP