oggstream: Fix crashes with 0-byte vorbis packets

Fixes bug #655574.
2011-08-03 10:18:29 +02:00 · 2011-08-03 10:18:29 +02:00 · 8bd3bdaf37
commit 8bd3bdaf37
parent fe17585568
1 changed files with 1 additions and 1 deletions
--- a/ext/ogg/gstoggstream.c
+++ b/ext/ogg/gstoggstream.c
@ -792,7 +792,7 @@ packet_duration_vorbis (GstOggStream * pad, ogg_packet * packet)
  int size;
  int duration;

-  if (packet->packet[0] & 1)
+  if (packet->bytes == 0 || packet->packet[0] & 1)
    return 0;

  mode = (packet->packet[0] >> 1) & ((1 << pad->vorbis_log2_num_modes) - 1);