diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
index e4ededd..6fa4e9f 100644
--- a/Source/WebCore/ChangeLog
+++ b/Source/WebCore/ChangeLog
@@ -1,3 +1,17 @@
+2019-05-17  Brent Fulgham  <bfulgham@apple.com>
+
+        Hardening: Prevent FrameLoader crash due to SetForScope
+        https://bugs.webkit.org/show_bug.cgi?id=197458
+        <rdar://problem/50368338>
+
+        Reviewed by Chris Dumez.
+
+        Since SetForScope takes action during a function returns, it might cause
+        a crash if its scope is broader than the value it is resetting.
+
+        * loader/FrameLoader.cpp:
+        (WebCore::FrameLoader::loadDifferentDocumentItem):
+
 2019-05-16  Carlos Garcia Campos  <cgarcia@igalia.com>
 
         [GTK] Need WebKitContextMenuItemType to open emoji picker
diff --git a/Source/WebCore/loader/FrameLoader.cpp b/Source/WebCore/loader/FrameLoader.cpp
index 8e70f3c..a191f79 100644
--- a/Source/WebCore/loader/FrameLoader.cpp
+++ b/Source/WebCore/loader/FrameLoader.cpp
@@ -3696,6 +3696,8 @@
 {
     RELEASE_LOG_IF_ALLOWED("loadDifferentDocumentItem: frame load started (frame = %p, main = %d)", &m_frame, m_frame.isMainFrame());
 
+    Ref<Frame> protectedFrame(m_frame);
+
     // History items should not be reported to the parent.
     m_shouldReportResourceTimingToParentFrame = false;