ofz#68234 emf XForm isnan members

Change-Id: If3d199e764785e1923d40a1b36c388607a5e4326
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/166507
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/emfio/source/reader/mtftools.cxx b/emfio/source/reader/mtftools.cxx
index 40b040820960..93dbea41ba99 100644
--- a/emfio/source/reader/mtftools.cxx
+++ b/emfio/source/reader/mtftools.cxx
@@ -62,6 +62,16 @@ namespace emfio
             rInStream.ReadFloat(rXForm.eM22);
             rInStream.ReadFloat(rXForm.eDx);
             rInStream.ReadFloat(rXForm.eDy);
+            if (std::isnan(rXForm.eM11) ||
+                std::isnan(rXForm.eM12) ||
+                std::isnan(rXForm.eM21) ||
+                std::isnan(rXForm.eM22) ||
+                std::isnan(rXForm.eDx) ||
+                std::isnan(rXForm.eDy))
+            {
+                SAL_WARN("emfio", "XForm member isnan, ignoring");
+                rXForm = XForm();
+            }
         }
         return rInStream;
     }