From a470b5e5371d0674d06068ec38d0d3c3279e85e1 Mon Sep 17 00:00:00 2001 From: weili Date: Tue, 23 Aug 2016 22:08:37 -0700 Subject: Fix stack overflow in object Clone() functions For some complex objects such as CPDF_Dictionary, CPDF_Array, CPDF_Stream, and CPDF_Reference, Clone() could be executed with infinite recursion to cause the stack overflow. Fix this by checking already cloned objects to avoid recursion. BUG=pdfium:513 Review-Url: https://codereview.chromium.org/2250533002 --- fpdfsdk/fpdfppo.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fpdfsdk/fpdfppo.cpp') diff --git a/fpdfsdk/fpdfppo.cpp b/fpdfsdk/fpdfppo.cpp index 97fd390cb3..85dba5e975 100644 --- a/fpdfsdk/fpdfppo.cpp +++ b/fpdfsdk/fpdfppo.cpp @@ -407,6 +407,6 @@ DLLEXPORT FPDF_BOOL STDCALL FPDF_CopyViewerPreferences(FPDF_DOCUMENT dest_doc, if (!pDstDict) return FALSE; - pDstDict->SetAt("ViewerPreferences", pSrcDict->Clone(TRUE)); + pDstDict->SetAt("ViewerPreferences", pSrcDict->CloneDirectObject()); return TRUE; } -- cgit v1.2.3