diff -urN poppler-0.10.6.orig/poppler/CMap.cc poppler-0.10.6/poppler/CMap.cc
--- poppler-0.10.6.orig/poppler/CMap.cc	2009-03-29 21:50:42.000000000 +0000
+++ poppler-0.10.6/poppler/CMap.cc	2009-05-06 09:06:02.000000000 +0000
@@ -105,12 +105,14 @@
 	  break;
 	}
 	if (tok1[0] == '<' && tok2[0] == '<' &&
-	    n1 == n2 && n1 >= 4 && (n1 & 1) == 0) {
+	    n1 == n2 && n1 >= 4 && n1 <= 6 && (n1 & 1) == 0) {
 	  tok1[n1 - 1] = tok2[n1 - 1] = '\0';
 	  sscanf(tok1 + 1, "%x", &start);
 	  sscanf(tok2 + 1, "%x", &end);
 	  n1 = (n1 - 2) / 2;
-	  cmap->addCodeSpace(cmap->vector, start, end, n1);
+          if (start <= end) {
+	    cmap->addCodeSpace(cmap->vector, start, end, n1);
+	  }
 	}
       }
       pst->getToken(tok1, sizeof(tok1), &n1);