From: zhanglin zhang.lin16@zte.com.cn
[ Upstream commit 5ff223e86f5addbfae26419cbb5d61d98f6fbf7d ]
memset() the structure ethtool_wolinfo that has padded bytes but the padded bytes have not been zeroed out.
Signed-off-by: zhanglin zhang.lin16@zte.com.cn Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/core/ethtool.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -1438,11 +1438,13 @@ static int ethtool_reset(struct net_devi
static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) { - struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; + struct ethtool_wolinfo wol;
if (!dev->ethtool_ops->get_wol) return -EOPNOTSUPP;
+ memset(&wol, 0, sizeof(struct ethtool_wolinfo)); + wol.cmd = ETHTOOL_GWOL; dev->ethtool_ops->get_wol(dev, &wol);
if (copy_to_user(useraddr, &wol, sizeof(wol)))