Messages in this thread Patch in this message |  | | From | zhanglin <> | | Subject | [PATCH] net: Zeroing the structure ethtool_wolinfo in ethtool_get_wol() | | Date | Sat, 26 Oct 2019 15:54:16 +0800 |
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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> --- net/core/ethtool.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/core/ethtool.c b/net/core/ethtool.c index aeabc48..563a845 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -1471,11 +1471,13 @@ 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))) -- 2.15.2
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