From dfeec347f21b86879ba8f27f567bb275b243f1bc Mon Sep 17 00:00:00 2001
From: Zackery Spytz <zspytz@gmail.com>
Date: Tue, 30 Mar 2021 00:22:34 -0600
Subject: [PATCH] bpo-43637: Fix a possible memory leak in winreg.SetValueEx()
 (GH-25038)

---
 PC/winreg.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/PC/winreg.c b/PC/winreg.c
index fb488d8eb02..004a89a5355 100644
--- a/PC/winreg.c
+++ b/PC/winreg.c
@@ -1813,6 +1813,7 @@ winreg_SetValueEx_impl(PyObject *module, HKEY key,
     if (PySys_Audit("winreg.SetValue", "nunO",
                     (Py_ssize_t)key, value_name, (Py_ssize_t)type,
                     value) < 0) {
+        PyMem_Free(data);
         return NULL;
     }
     Py_BEGIN_ALLOW_THREADS