Rob Shearman : ntdll: Don' t read beyond the end of the array on the last ace iteration in RtlValidAcl .

[Alexandre Julliard]

Module: wine
Branch: master
Commit: f2f50f18dc1a6fab7a0ec68d8e8764e0f3399481
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=f2f50f18dc1a6fab7a0ec68d8e...

Author: Rob Shearman <robertshearman(a)gmail.com>
Date:   Sun Nov 29 10:28:32 2009 +0000

ntdll: Don't read beyond the end of the array on the last ace iteration in RtlValidAcl.

---

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

diff --git a/dlls/ntdll/sec.c b/dlls/ntdll/sec.c
index 950b9dd..64efdb5 100644
--- a/dlls/ntdll/sec.c
+++ b/dlls/ntdll/sec.c
@@ -1328,7 +1328,8 @@ BOOLEAN WINAPI RtlValidAcl(PACL pAcl)
                             ret = FALSE;
                             break;
                         }
-                        ace = (PACE_HEADER)(((BYTE*)ace)+ace->AceSize);
+                        if (i != pAcl->AceCount)
+                            ace = (PACE_HEADER)(((BYTE*)ace)+ace->AceSize);
                     }
                 }
 	}