diff --git a/Lib/importlib/test/source/util.py b/Lib/importlib/test/source/util.py
index ca04edf..2b945c5 100644
--- a/Lib/importlib/test/source/util.py
+++ b/Lib/importlib/test/source/util.py
@@ -42,8 +42,8 @@
     that contains the name passed into the context manager that caused the
     creation of the module.
 
-    All files are created in a temporary directory specified by
-    tempfile.gettempdir(). This directory is inserted at the beginning of
+    All files are created in a temporary directory returned by
+    tempfile.mkdtemp(). This directory is inserted at the beginning of
     sys.path. When the context manager exits all created files (source and
     bytecode) are explicitly deleted.
 
@@ -55,8 +55,10 @@
     source = 'attr = {0!r}'
     created_paths = []
     mapping = {}
+    state_manager = None
+    uncache_manager = None
     try:
-        temp_dir = tempfile.gettempdir()
+        temp_dir = tempfile.mkdtemp()
         mapping['.root'] = temp_dir
         import_names = set()
         for name in names:
@@ -85,13 +87,8 @@
         state_manager.__enter__()
         yield mapping
     finally:
-        state_manager.__exit__(None, None, None)
-        uncache_manager.__exit__(None, None, None)
-        # Reverse the order for path removal to unroll directory creation.
-        for path in reversed(created_paths):
-            if file_path.endswith('.py'):
-                support.unlink(path)
-                support.unlink(path + 'c')
-                support.unlink(path + 'o')
-            else:
-                os.rmdir(path)
+        if state_manager is not None:
+            state_manager.__exit__(None, None, None)
+        if uncache_manager is not None:
+            uncache_manager.__exit__(None, None, None)
+        support.rmtree(temp_dir)
diff --git a/Misc/NEWS b/Misc/NEWS
index d7de60f..c67407f 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -134,6 +134,14 @@
 Tests
 -----
 
+- Issue #7248 (part 2): Use a unique temporary directory for importlib source
+  tests instead of tempfile.tempdir. This prevents the tests from sharing state
+  between concurrent executions on the same system.
+
+- Issue #7248: In importlib.test.source.util a try/finally block did not make
+  sure that some referenced objects actually were created in the block before
+  calling methods on the object.
+
 - Issue #7055: test___all__ now greedily detects all modules which have an
   __all__ attribute, rather than using a hardcoded and incomplete list.