Description: fix heap-based buffer over-read.
Origin: upstream, commit: d2b032452241708bee68d02aa02092cfbfba951a
Author: Christian Grothoff <christian@grothoff.org>

--- a/src/plugins/dvi_extractor.c
+++ b/src/plugins/dvi_extractor.c
@@ -182,6 +182,8 @@
   size = ec->get_size (ec->cls);
   if (size > 16 * 1024 * 1024)
     return; /* too large */
+  if (klen + 15 > size)
+    return; /* malformed klen */
   if (NULL == (data = malloc ((size_t) size)))
     return; /* out of memory */
   memcpy (data, buf, iret);