1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/pps/pps.c b/drivers/pps/pps.c
index 3a546ec10d90..22a65ad4e46e 100644
--- a/drivers/pps/pps.c
+++ b/drivers/pps/pps.c
@@ -152,6 +152,14 @@ static long pps_cdev_ioctl(struct file *file,
                         pps->params.mode |= PPS_CANWAIT;
                 pps->params.api_version = PPS_API_VERS;
 
+                /*
+                 * Clear unused fields of pps_kparams to avoid leaking
+                 * uninitialized data of the PPS_SETPARAMS caller via
+                 * PPS_GETPARAMS
+                 */
+                pps->params.assert_off_tu.flags = 0;
+                pps->params.clear_off_tu.flags = 0;
+
                 spin_unlock_irq(&pps->lock);
 
                 break;