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path: root/drivers/net/macvtap.c
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Diffstat (limited to 'drivers/net/macvtap.c')
-rw-r--r--drivers/net/macvtap.c5
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;