Alexandre Julliard : ntdll: Only free reserved memory for HIGH_ENTROPY_VA binaries.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: f03c3a167c2e4abe92b1e1bf2ea5f7c31a07fc3b
URL:    https://gitlab.winehq.org/wine/wine/-/commit/f03c3a167c2e4abe92b1e1bf2ea5f7c...

Author: Alexandre Julliard <julliard(a)winehq.org>
Date:   Fri Dec  8 16:13:51 2023 +0100

ntdll: Only free reserved memory for HIGH_ENTROPY_VA binaries.

To avoid triggering pointer-truncation bugs in applications.

---

 dlls/ntdll/unix/virtual.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/ntdll/unix/virtual.c b/dlls/ntdll/unix/virtual.c
index 75e6319c007..5bdeef4c1bc 100644
--- a/dlls/ntdll/unix/virtual.c
+++ b/dlls/ntdll/unix/virtual.c
@@ -4397,7 +4397,7 @@ void virtual_set_large_address_space(void)
         if (is_wow64())
             user_space_wow_limit = ((main_image_info.ImageCharacteristics & IMAGE_FILE_LARGE_ADDRESS_AWARE) ? limit_4g : limit_2g) - 1;
 #ifndef __APPLE__  /* don't free the zerofill section on macOS */
-        else
+        else if (main_image_info.DllCharacteristics & IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA)
             free_reserved_memory( 0, (char *)0x7ffe0000 );
 #endif
     }