commit dfeec347f21b86879ba8f27f567bb275b243f1bc
author Zackery Spytz <zspytz@gmail.com> Tue Mar 30 00:22:34 2021 -0600
committer GitHub <noreply@github.com> Tue Mar 30 15:22:34 2021 +0900
tree 00c383d6993cd0ae8f631084154771f277ab31e4
parent 068ebf9729d440cef03e4c57e3db83c851146172

bpo-43637: Fix a possible memory leak in winreg.SetValueEx() (GH-25038)

PC/winreg.c

diff --git a/PC/winreg.c b/PC/winreg.c
index fb488d8..004a89a 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