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bond: Check length of IFLA_BOND_ARP_IP_TARGET attributes 

Fixes: 7f28fa10 ("bonding: add arp_ip_target netlink support")
Reported-by: John Fastabend <john.fastabend@gmail.com>
Cc: Scott Feldman <sfeldma@cumulusnetworks.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Graf 2014-11-27 00:22:33 +01:00 committed by David S. Miller
parent 7a5a4f9787
commit f6c6fda4c9
1 changed files with 6 additions and 1 deletions
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7
drivers/net/bonding/bond_netlink.c
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@ -225,7 +225,12 @@ static int bond_changelink(struct net_device *bond_dev,
bond_option_arp_ip_targets_clear(bond);
nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) {
__be32 target = nla_get_be32(attr);
__be32 target;
if (nla_len(attr) < sizeof(target))
return -EINVAL;
target = nla_get_be32(attr);
bond_opt_initval(&newval, (__force u64)target);
err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS,