net: Zeroing the structure ethtool_wolinfo in ethtool_get_wol() (5ff223e8) · Commits · 戴 / test

memset() the structure ethtool_wolinfo that has padded bytes but the padded bytes have not been zeroed out. Signed-off-by:

net/core/ethtool.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -1396,11 +1396,13 @@ static int ethtool_reset(struct net_device dev, char __user useraddr)

		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)))