diff options
| author | David S. Miller <davem@davemloft.net> | 2017-07-19 23:33:24 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-11 18:33:56 +0300 |
| commit | f236da93df5be85409c24f03683e3d8c54fac72b (patch) | |
| tree | 3d146a9619150d4202eb779907d8da2d56d9d487 | |
| parent | c42851f218cc1a82494bd4263952f9b7a8673fcd (diff) | |
| download | linux-f236da93df5be85409c24f03683e3d8c54fac72b.tar.xz | |
net: Zero terminate ifr_name in dev_ifname().
[ 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>
| -rw-r--r-- | net/core/dev_ioctl.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c index 434413f1074a..18f9cb9aa87d 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) |