Piotr Caban : ntdll: Don't overwrite last byte of RuntimeInfo if odd number of bytes is used.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: c73bea16eb510c5806c9477eeacc63a6d5092f17
URL:    https://gitlab.winehq.org/wine/wine/-/commit/c73bea16eb510c5806c9477eeacc63a...

Author: Piotr Caban <piotr(a)codeweavers.com>
Date:   Thu Aug 24 14:39:36 2023 +0200

ntdll: Don't overwrite last byte of RuntimeInfo if odd number of bytes is used.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=55287

---

 dlls/ntdll/unix/env.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/dlls/ntdll/unix/env.c b/dlls/ntdll/unix/env.c
index 3f00f6f68de..f42c6a8f59f 100644
--- a/dlls/ntdll/unix/env.c
+++ b/dlls/ntdll/unix/env.c
@@ -1702,7 +1702,7 @@ static inline void dup_unicode_string( const UNICODE_STRING *src, WCHAR **dst, U
     str->Length = src->Length;
     str->MaximumLength = src->MaximumLength;
     memcpy( *dst, src->Buffer, src->MaximumLength );
-    *dst += src->MaximumLength / sizeof(WCHAR);
+    *dst += (src->MaximumLength + 1) / sizeof(WCHAR);
 }
 
 
@@ -1798,7 +1798,7 @@ static void *build_wow64_parameters( const RTL_USER_PROCESS_PARAMETERS *params )
                    + params->WindowTitle.MaximumLength
                    + params->Desktop.MaximumLength
                    + params->ShellInfo.MaximumLength
-                   + params->RuntimeInfo.MaximumLength
+                   + ((params->RuntimeInfo.MaximumLength + 1) & ~1)
                    + params->EnvironmentSize);
 
     status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&wow64_params, 0, &size,