--- source/src/plugins/platforms/wayland/qwaylandcursor.cpp
+++ source/src/plugins/platforms/wayland/qwaylandcursor.cpp
@@ -177,6 +177,10 @@ wl_cursor *QWaylandCursorTheme::requestCursor(WaylandCursor shape)
                                      ShapeAndName{shape, ""}, byShape);
     for (auto it = p.first; it != p.second; ++it) {
         if (wl_cursor *cursor = wl_cursor_theme_get_cursor(m_theme, it->name)) {
+            if (cursor->image_count == 0 || !cursor->images || !cursor->images[0]) {
+                qCWarning(lcQpaWayland) << "Ignoring empty Wayland cursor" << it->name;
+                continue;
+            }
             m_cursors[shape] = cursor;
             return cursor;
         }
--- source/src/plugins/platforms/wayland/qwaylandinputdevice.cpp
+++ source/src/plugins/platforms/wayland/qwaylandinputdevice.cpp
@@ -225,6 +225,10 @@ void QWaylandInputDevice::Pointer::updateCursorTheme()
         return; // A warning has already been printed in loadCursorTheme
 
     if (auto *arrow = mCursor.theme->cursor(Qt::ArrowCursor)) {
+        if (arrow->image_count == 0 || !arrow->images || !arrow->images[0]) {
+            qCWarning(lcQpaWayland) << "Cursor theme returned an empty arrow cursor";
+            return;
+        }
         int arrowPixelSize = qMax(arrow->images[0]->width, arrow->images[0]->height); // Not all cursor themes are square
         while (scale > 1 && arrowPixelSize / scale < cursorSize.width())
             --scale;
@@ -279,8 +283,16 @@ void QWaylandInputDevice::Pointer::updateCursor()
 
     if (struct ::wl_cursor *waylandCursor = mCursor.theme->cursor(shape)) {
+        if (waylandCursor->image_count == 0 || !waylandCursor->images) {
+            qCWarning(lcQpaWayland) << "Cursor theme returned an empty cursor" << shape;
+            return;
+        }
         uint duration = 0;
         int frame = wl_cursor_frame_and_duration(waylandCursor, time, &duration);
+        if (frame < 0 || uint(frame) >= waylandCursor->image_count || !waylandCursor->images[frame]) {
+            qCWarning(lcQpaWayland) << "Cursor theme returned an invalid cursor frame" << shape << frame;
+            return;
+        }
         ::wl_cursor_image *image = waylandCursor->images[frame];
 
         struct wl_buffer *buffer = wl_cursor_image_get_buffer(image);
--- source/src/plugins/platforms/wayland/qwaylandtabletv2.cpp
+++ source/src/plugins/platforms/wayland/qwaylandtabletv2.cpp
@@ -62,6 +62,10 @@ void QWaylandTabletToolV2::updateCursorTheme()
         return; // A warning has already been printed in loadCursorTheme
 
     if (auto *arrow = mCursor.theme->cursor(Qt::ArrowCursor)) {
+        if (arrow->image_count == 0 || !arrow->images || !arrow->images[0]) {
+            qCWarning(lcQpaWayland) << "Cursor theme returned an empty tablet arrow cursor";
+            return;
+        }
         int arrowPixelSize = qMax(arrow->images[0]->width,
                                   arrow->images[0]->height); // Not all cursor themes are square
         while (scale > 1 && arrowPixelSize / scale < cursorSize.width())
@@ -117,8 +121,16 @@ void QWaylandTabletToolV2::updateCursor()
 
     if (struct ::wl_cursor *waylandCursor = mCursor.theme->cursor(shape)) {
+        if (waylandCursor->image_count == 0 || !waylandCursor->images) {
+            qCWarning(lcQpaWayland) << "Cursor theme returned an empty tablet cursor" << shape;
+            return;
+        }
         uint duration = 0;
         int frame = wl_cursor_frame_and_duration(waylandCursor, time, &duration);
+        if (frame < 0 || uint(frame) >= waylandCursor->image_count || !waylandCursor->images[frame]) {
+            qCWarning(lcQpaWayland) << "Cursor theme returned an invalid tablet cursor frame" << shape << frame;
+            return;
+        }
         ::wl_cursor_image *image = waylandCursor->images[frame];
 
         struct wl_buffer *buffer = wl_cursor_image_get_buffer(image);