[PATCH] net: Zero terminate ifr_name in dev_ifname().

[David Miller]

The ifr.ifr_name is passed around and assumed to be NULL terminated.

Signed-off-by: David S. Miller <da...@davemloft.net>
---
 net/core/dev_ioctl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c
index 7657ad6bc13d..06b147d7d9e2 100644
--- a/net/core/dev_ioctl.c
+++ b/net/core/dev_ioctl.c
@@ -28,6 +28,7 @@ static int dev_ifname(struct net *net, struct ifreq __user 
*arg)
 
        if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
                return -EFAULT;
+       ifr.ifr_name[IFNAMSIZ-1] = 0;
 
        error = netdev_get_name(net, ifr.ifr_name, ifr.ifr_ifindex);
        if (error)
-- 
2.13.3