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net: rtnl: info leak in rtnl_fill_vfinfo()

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The "vf_vlan_info" struct ends with a 2 byte struct hole so we have to
memset it to ensure that no stack information is revealed to user space.

Fixes: 79aab093a0 ('net: Update API for VF vlan protocol 802.1ad support')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Carpenter 2016-10-13 11:45:28 +03:00 committed by David S. Miller
parent 7307616245
commit 775f4f0550
1 changed files with 2 additions and 0 deletions
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2
net/core/rtnetlink.c
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@ -1144,6 +1144,8 @@ static noinline_for_stack int rtnl_fill_vfinfo(struct sk_buff *skb,
if (dev->netdev_ops->ndo_get_vf_config(dev, vfs_num, &ivi))
return 0;
memset(&vf_vlan_info, 0, sizeof(vf_vlan_info));
vf_mac.vf =
vf_vlan.vf =
vf_vlan_info.vf =