1 files changed, 6 insertions, 1 deletions
diff --git a/core/fpdfapi/fpdf_parser/cpdf_parser.cpp b/core/fpdfapi/fpdf_parser/cpdf_parser.cpp
index acf51de1ea..c66647846d 100644
--- a/core/fpdfapi/fpdf_parser/cpdf_parser.cpp
+++ b/core/fpdfapi/fpdf_parser/cpdf_parser.cpp
@@ -1077,8 +1077,13 @@ FX_BOOL CPDF_Parser::LoadCrossRefV5(FX_FILESIZE* pos, FX_BOOL bMainXRef) {
     FX_SAFE_UINT32 dwMaxObjNum = startnum;
     dwMaxObjNum += count;
     uint32_t dwV5Size = m_ObjectInfo.empty() ? 0 : GetLastObjNum() + 1;
-    if (!dwMaxObjNum.IsValid() || dwMaxObjNum.ValueOrDie() > dwV5Size)
+    if (!dwMaxObjNum.IsValid())
       continue;
+    // When the max object number is larger than the defined size, try to
+    // increase the size to accomodate more objects.
+    // Some software messes this up, see chromium:596947.
+    if (dwMaxObjNum.ValueOrDie() > dwV5Size)
+      ShrinkObjectMap(dwMaxObjNum.ValueOrDie());
 
     for (uint32_t j = 0; j < count; j++) {
       int32_t type = 1;