diff options
| -rw-r--r-- | drivers/net/macvtap.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index c8a23896d54e..483afb19596c 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -1006,6 +1006,7 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd, unsigned int __user *up = argp; unsigned short u; int __user *sp = argp; + struct sockaddr sa; int s; int ret; @@ -1119,13 +1120,15 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd, return ret; case SIOCSIFHWADDR: + if (copy_from_user(&sa, &ifr->ifr_hwaddr, sizeof(sa))) + return -EFAULT; rtnl_lock(); vlan = macvtap_get_vlan(q); if (!vlan) { rtnl_unlock(); return -ENOLINK; } - ret = dev_set_mac_address(vlan->dev, &ifr->ifr_hwaddr); + ret = dev_set_mac_address(vlan->dev, &sa); macvtap_put_vlan(vlan); rtnl_unlock(); return ret; |