diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2026-07-26-18-34-45.gh-issue-154561.vuDLtN.rst b/Misc/NEWS.d/next/Core_and_Builtins/2026-07-26-18-34-45.gh-issue-154561.vuDLtN.rst
new file mode 100644
index 00000000000000..08a4a4a2fe5781
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2026-07-26-18-34-45.gh-issue-154561.vuDLtN.rst
@@ -0,0 +1,3 @@
+Fix a race condition in the free-threaded build where concurrent access to
+the same lazy-imported submodule attribute could raise :exc:`AttributeError`.
+Patch by Bartosz Sławecki.
diff --git a/Objects/moduleobject.c b/Objects/moduleobject.c
index b8cd6025c20ba5..c24435bdbf0068 100644
--- a/Objects/moduleobject.c
+++ b/Objects/moduleobject.c
@@ -1398,6 +1398,16 @@ _Py_module_getattro_impl(PyModuleObject *m, PyObject *name, int suppress)
     if (PyErr_Occurred()) {
         return NULL;
     }
+    // Other threads could have raced to load the submodule.
+    // Re-check the module dict to avoid race condition.
+    attr = _PyObject_GenericGetAttrWithDict((PyObject *)m, name, NULL, 1);
+    if (attr != NULL) {
+        return attr;
+    }
+    if (PyErr_Occurred()) {
+        // pass up non-AttributeError exception
+        return NULL;
+    }
     if (PyDict_GetItemRef(m->md_dict, &_Py_ID(__getattr__), &getattr) < 0) {
         return NULL;
     }