Robert Shearman : rpcrt4: Clear an object pointer during unmarshaling,
otherwise we
Alexandre Julliard
julliard at wine.codeweavers.com
Fri Jun 9 14:39:44 CDT 2006
Module: wine
Branch: refs/heads/master
Commit: d98b73a17ac2903001854b2fc80aad0550995cb2
URL: http://source.winehq.org/git/?p=wine.git;a=commit;h=d98b73a17ac2903001854b2fc80aad0550995cb2
Author: Robert Shearman <rob at codeweavers.com>
Date: Fri Jun 9 17:29:28 2006 +0100
rpcrt4: Clear an object pointer during unmarshaling, otherwise we
could end up using the previously allocated memory even if it isn't
the right size, causing heap corruption.
---
dlls/rpcrt4/ndr_marshall.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/dlls/rpcrt4/ndr_marshall.c b/dlls/rpcrt4/ndr_marshall.c
index 7bddb4f..6143c0c 100644
--- a/dlls/rpcrt4/ndr_marshall.c
+++ b/dlls/rpcrt4/ndr_marshall.c
@@ -842,7 +842,10 @@ static void PointerUnmarshall(PMIDL_STUB
pointer_id = NDR_LOCAL_UINT32_READ(Buffer);
TRACE("pointer_id is 0x%08lx\n", pointer_id);
if (!fMustAlloc && *pPointer)
+ {
FIXME("free object pointer %p\n", *pPointer);
+ *pPointer = NULL;
+ }
if (pointer_id)
pointer_needs_unmarshaling = 1;
else
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