From f49eccef01263308652be64ec7ae5d8714ece08c Mon Sep 17 00:00:00 2001
From: Timo Kreuzer <timo.kreuzer@reactos.org>
Date: Wed, 14 Jan 2026 11:34:58 +0200
Subject: [PATCH] [KERNEL32] Fix alignment of a security descriptor

Fixes boot of release builds. See CORE-20432
---
 dll/win32/kernel32/winnls/string/nls.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/dll/win32/kernel32/winnls/string/nls.c b/dll/win32/kernel32/winnls/string/nls.c
index 1acc8b5c585..4ee5dc48ae1 100644
--- a/dll/win32/kernel32/winnls/string/nls.c
+++ b/dll/win32/kernel32/winnls/string/nls.c
@@ -297,7 +297,11 @@ IntGetCodePageEntry(UINT CodePage)
     HANDLE SectionHandle = INVALID_HANDLE_VALUE, FileHandle;
     PBYTE SectionMapping;
     OBJECT_ATTRIBUTES ObjectAttributes;
-    UCHAR SecurityDescriptor[NLS_SECTION_SECURITY_DESCRIPTOR_SIZE];
+    union
+    {
+        SECURITY_DESCRIPTOR AlignedSd;
+        UCHAR Buffer[NLS_SECTION_SECURITY_DESCRIPTOR_SIZE];
+    } SecurityDescriptor;
     ANSI_STRING AnsiName;
     UNICODE_STRING UnicodeName;
     WCHAR FileName[MAX_PATH + 1];
@@ -389,7 +393,7 @@ IntGetCodePageEntry(UINT CodePage)
                                &UnicodeName,
                                OBJ_CASE_INSENSITIVE,
                                NULL,
-                               SecurityDescriptor);
+                               &SecurityDescriptor);
 
     /* Try to open the section first */
     Status = NtOpenSection(&SectionHandle,