isdn: make sure strings are null terminated

[pandora-kernel.git] / drivers / isdn / divert / divert_procfs.c

diff --git a/drivers/isdn/divert/divert_procfs.c b/drivers/isdn/divert/divert_procfs.c
index 33ec9e4..9021182 100644 (file)
--- a/drivers/isdn/divert/divert_procfs.c
+++ b/drivers/isdn/divert/divert_procfs.c
@@ -242,6 +242,12 @@ static int isdn_divert_ioctl_unlocked(struct file *file, uint cmd, ulong arg)
                case IIOCDOCFINT:
                        if (!divert_if.drv_to_name(dioctl.cf_ctrl.drvid))
                                return (-EINVAL);       /* invalid driver */
+                       if (strnlen(dioctl.cf_ctrl.msn, sizeof(dioctl.cf_ctrl.msn)) ==
+                                       sizeof(dioctl.cf_ctrl.msn))
+                               return -EINVAL;
+                       if (strnlen(dioctl.cf_ctrl.fwd_nr, sizeof(dioctl.cf_ctrl.fwd_nr)) ==
+                                       sizeof(dioctl.cf_ctrl.fwd_nr))
+                               return -EINVAL;
                        if ((i = cf_command(dioctl.cf_ctrl.drvid,
                                            (cmd == IIOCDOCFACT) ? 1 : (cmd == IIOCDOCFDIS) ? 0 : 2,
                                            dioctl.cf_ctrl.cfproc,