| Message ID | 20111124124149.GH3195@mwanda |
|---|---|
| State | Accepted, archived |
| Delegated to: | David Miller |
| Headers | show |
From: Dan Carpenter <dan.carpenter@oracle.com> Date: Thu, 24 Nov 2011 15:41:49 +0300 > These strings come from the user. We strcpy() them inside > cf_command() so we should check that they are NULL terminated and > return an error if not. > > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> > --- > v2: use strnlen() instead of strlen(). Applied. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/isdn/divert/divert_procfs.c b/drivers/isdn/divert/divert_procfs.c index 33ec9e4..9021182 100644 --- 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,
These strings come from the user. We strcpy() them inside cf_command() so we should check that they are NULL terminated and return an error if not. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> --- v2: use strnlen() instead of strlen().