From e0aefbd263c36b84bc98cd92f3ae3ac871e73bcd Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Thu, 8 May 2025 13:32:59 +0200
Subject: [PATCH] gh-133597: Fix memory leak if error occurred in
 _sys_getwindowsversion_from_kernel32 (GH-133598)

(cherry picked from commit 0ec8fc83a83914d2ae97e52529e98ce63aaf831c)

Co-authored-by: Sergey Miryanov <sergey.miryanov@gmail.com>
---
 Python/sysmodule.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index 80d1bf3b914e..4b7f0cc68daa 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -1693,6 +1693,9 @@ _sys_getwindowsversion_from_kernel32(void)
         !GetFileVersionInfoW(kernel32_path, 0, verblock_size, verblock) ||
         !VerQueryValueW(verblock, L"", (LPVOID)&ffi, &ffi_len)) {
         PyErr_SetFromWindowsErr(0);
+        if (verblock) {
+            PyMem_RawFree(verblock);
+        }
         return NULL;
     }