diff options
Diffstat (limited to 'drivers/char/dz.c')
| -rw-r--r-- | drivers/char/dz.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/char/dz.c b/drivers/char/dz.c index a97d8a694..47918ce4a 100644 --- a/drivers/char/dz.c +++ b/drivers/char/dz.c @@ -847,10 +847,12 @@ static int set_serial_info (struct dz_serial *info, struct serial_struct *new_in if (!new_info) return -EFAULT; - copy_from_user (&new_serial, new_info, sizeof(new_serial)); + if(copy_from_user (&new_serial, new_info, sizeof(new_serial))) + return -EFAULT; + old_info = *info; - if (!suser()) + if (!capable(CAP_SYS_ADMIN)) return -EPERM; if (info->count > 1) |