diff --git a/Lib/logging/__init__.py b/Lib/logging/__init__.py
index 549a6b3c457b2c6..2924ecdfbe204fd 100644
--- a/Lib/logging/__init__.py
+++ b/Lib/logging/__init__.py
@@ -1680,6 +1680,8 @@ def _log(self, level, msg, args, exc_info=None, extra=None, stack_info=False,
                 exc_info = (type(exc_info), exc_info, exc_info.__traceback__)
             elif not isinstance(exc_info, tuple):
                 exc_info = sys.exc_info()
+        else:
+            exc_info = None
         record = self.makeRecord(self.name, level, fn, lno, msg, args,
                                  exc_info, func, extra, sinfo)
         self.handle(record)
diff --git a/Misc/NEWS.d/next/Library/2026-10-05-14-58-12.gh-issue-158839.wYd6fI.rst b/Misc/NEWS.d/next/Library/2026-10-05-14-58-12.gh-issue-158839.wYd6fI.rst
new file mode 100644
index 000000000000000..9bdf648f42783f2
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2026-10-05-14-58-12.gh-issue-158839.wYd6fI.rst
@@ -0,0 +1,5 @@
+The log functions in the :mod:`logging` module and the
+:class:`logging.Logger` class now normalize falsy ``exc_info`` arguments to
+``None`` before passing them to :meth:`logging.Logger.makeRecord` and
+subsequently to :class:`logging.LogRecord`. This aligns
+``logging.LogRecord.exc_info`` with the documentation.