ofz#2392 restored props don't match saved props

Change-Id: Idb198f0121ac9c6b4083b157af07c5eb1cda66cb
Reviewed-on: https://gerrit.libreoffice.org/39266
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Stahl <mstahl@redhat.com>

1 files changed, 13 insertions, 2 deletions

diff --git a/sw/source/filter/ww8/ww8scan.cxx b/sw/source/filter/ww8/ww8scan.cxx
index f71618f56044..6ce951b8a529 100644
--- a/sw/source/filter/ww8/ww8scan.cxx
+++ b/sw/source/filter/ww8/ww8scan.cxx
@@ -5339,8 +5339,19 @@ void WW8PLCFxDesc::Restore( const WW8PLCFxSave1& rSave )
             pPLCFx->GetSprms(&aD);
             pPLCFx->SetDirty(false);
             aD.ReduceByOffset();
-            pMemPos = aD.pMemPos + rSave.nPLCFxMemOfs;
-            nSprmsLen = nOrigSprmsLen - rSave.nPLCFxMemOfs;
+
+            if (nOrigSprmsLen > aD.nSprmsLen)
+            {
+                //two entries exist for the same offset, cut and run
+                SAL_WARN("sw.ww8", "restored properties don't match saved properties, bailing out");
+                nSprmsLen = 0;
+                pMemPos = nullptr;
+            }
+            else
+            {
+                nSprmsLen = nOrigSprmsLen - rSave.nPLCFxMemOfs;
+                pMemPos = aD.pMemPos + rSave.nPLCFxMemOfs;
+            }
         }
     }
 }