diff --git a/source/blender/blenkernel/intern/pbvh.cc b/source/blender/blenkernel/intern/pbvh.cc
index 07d4bf37923..f690868be0e 100644
--- a/source/blender/blenkernel/intern/pbvh.cc
+++ b/source/blender/blenkernel/intern/pbvh.cc
@@ -1177,6 +1177,19 @@ static void update_normals_faces(PBVH &pbvh, Span<PBVHNode *> nodes, Mesh &mesh)
     }
   }
 
+  /* In certain cases when undoing strokes on a duplicate object, the cached data may be marked
+   * dirty before this code is run, leaving the relevant vectors empty. We force reinitialize the
+   * vectors to prevent crashes here.
+   * See #125375 for more detail. */
+  if (!pbvh.deformed) {
+    if (mesh.runtime->face_normals_cache.is_dirty()) {
+      mesh.face_normals();
+    }
+    if (mesh.runtime->vert_normals_cache.is_dirty()) {
+      mesh.vert_normals();
+    }
+  }
+
   VectorSet<int> boundary_verts;
   threading::parallel_invoke(
       [&]() {