From: Edward Hervey <edward@centricular.com>
Date: Fri, 8 Dec 2017 07:00:07 +0000 (+0100)
Subject: typefind: Avoid overflow calculation (image/quicktime)
X-Git-Tag: 1.19.3~511^2~1997
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=aa10e82257c4646b18febb0d9dabbc6941f42c08;p=platform%2Fupstream%2Fgstreamer.git

typefind: Avoid overflow calculation (image/quicktime)

The qt typefinder uses guint64 values for offset and size calculation
but the typefinder system only supports gint64 values.

Make sure we don't end up using potentially overflowing values.
---

diff --git a/gst/typefind/gsttypefindfunctions.c b/gst/typefind/gsttypefindfunctions.c
index 0a66e3a..9d8005c 100644
--- a/gst/typefind/gsttypefindfunctions.c
+++ b/gst/typefind/gsttypefindfunctions.c
@@ -3460,6 +3460,8 @@ qtif_type_find (GstTypeFind * tf, gpointer unused)
     }
 
     offset += size;
+    if (offset + 8 >= G_MAXINT64)
+      break;
     if (++rounds > QTIF_MAXROUNDS)
       break;
   }