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path: root/drivers/pps/pps.c
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Diffstat (limited to 'drivers/pps/pps.c')
-rw-r--r--drivers/pps/pps.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/pps/pps.c b/drivers/pps/pps.c
index 2f07cd615665..76ae38450aea 100644
--- a/drivers/pps/pps.c
+++ b/drivers/pps/pps.c
@@ -129,6 +129,14 @@ 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;