Fix crash in broken pdf (parser->getStream() is 0)

Found thanks to PDF provided by Joel Voss of Leviathan Security Group

1 files changed, 7 insertions, 2 deletions

diff --git a/poppler/Gfx.cc b/poppler/Gfx.cc
index 50870cc1..fc004b8b 100644
--- a/poppler/Gfx.cc
+++ b/poppler/Gfx.cc
@@ -4449,8 +4449,13 @@ Stream *Gfx::buildImageStream() {
   obj.free();
 
   // make stream
-  str = new EmbedStream(parser->getStream(), &dict, gFalse, 0);
-  str = str->addFilters(&dict);
+  if (parser->getStream()) {
+    str = new EmbedStream(parser->getStream(), &dict, gFalse, 0);
+    str = str->addFilters(&dict);
+  } else {
+    str = NULL;
+    dict.free();
+  }
 
   return str;
 }