wavparse: Check that at least 4 bytes are available before parsing cue chunks

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8054>

diff --git a/subprojects/gst-plugins-good/gst/wavparse/gstwavparse.c b/subprojects/gst-plugins-good/gst/wavparse/gstwavparse.c
index 5ccf7cd1e162c41f8beb47d429504d9a5b0b0929..c36920501e122fe21cdbaf1a6c3a2a7e162b6be7 100644 (file)
--- a/subprojects/gst-plugins-good/gst/wavparse/gstwavparse.c
+++ b/subprojects/gst-plugins-good/gst/wavparse/gstwavparse.c
@@ -789,6 +789,11 @@ gst_wavparse_cue_chunk (GstWavParse * wav, const guint8 * data, guint32 size)
     return TRUE;
   }
 
+  if (size < 4) {
+    GST_WARNING_OBJECT (wav, "broken file %d", size);
+    return FALSE;
+  }
+
   ncues = GST_READ_UINT32_LE (data);
 
   if (size < 4 + ncues * 24) {