Check data_size in decode_frame_mp3on4().

backported r19987 by michael


Originally committed as revision 21717 to svn://svn.ffmpeg.org/ffmpeg/branches/0.5

libavcodec/mpegaudiodec.c

@@ -2473,6 +2473,9 @@ static int decode_frame_mp3on4(AVCodecContext * avctx,
     OUT_INT *outptr, *bp;
     int fr, j, n;
 
+    if(*data_size < MPA_FRAME_SIZE * MPA_MAX_CHANNELS * s->frames * sizeof(OUT_INT))
+        return -1;
+
     *data_size = 0;
     // Discard too short frames
     if (buf_size < HEADER_SIZE)