Alexandre Julliard : ntdll: Limit header_size to the file size.

[Alexandre Julliard]

Module: wine
Branch: refs/heads/master
Commit: 18d7980fd8557199d2162ab14c963b9b51f3cb5b
URL:    http://source.winehq.org/git/?p=wine.git;a=commit;h=18d7980fd8557199d2162ab1...

Author: Alexandre Julliard <julliard(a)winehq.org>
Date:   Mon Mar 27 21:29:46 2006 +0200

ntdll: Limit header_size to the file size.

---

 dlls/ntdll/virtual.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/dlls/ntdll/virtual.c b/dlls/ntdll/virtual.c
index d17c58d..17f9081 100644
--- a/dlls/ntdll/virtual.c
+++ b/dlls/ntdll/virtual.c
@@ -868,7 +868,8 @@ static NTSTATUS map_image( HANDLE hmappi
         goto error;
     }
     status = STATUS_INVALID_IMAGE_FORMAT;  /* generic error */
-    if (header_size > st.st_size) goto error;
+    if (!st.st_size) goto error;
+    header_size = min( header_size, st.st_size );
     if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ,
                             removable ) != STATUS_SUCCESS) goto error;
     dos = (IMAGE_DOS_HEADER *)ptr;