| From foo@baz Tue Aug 8 16:51:58 PDT 2017 |
| From: "David S. Miller" <davem@davemloft.net> |
| Date: Wed, 19 Jul 2017 13:33:24 -0700 |
| Subject: net: Zero terminate ifr_name in dev_ifname(). |
| |
| From: "David S. Miller" <davem@davemloft.net> |
| |
| |
| [ Upstream commit 63679112c536289826fec61c917621de95ba2ade ] |
| |
| The ifr.ifr_name is passed around and assumed to be NULL terminated. |
| |
| Signed-off-by: David S. Miller <davem@davemloft.net> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| --- |
| net/core/dev_ioctl.c | 1 + |
| 1 file changed, 1 insertion(+) |
| |
| --- a/net/core/dev_ioctl.c |
| +++ b/net/core/dev_ioctl.c |
| @@ -28,6 +28,7 @@ static int dev_ifname(struct net *net, s |
| |
| 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) |
