DVDSubParseContext *pc = s->priv_data;
if (pc->packet_index == 0) {
- if (buf_size < 2)
- return 0;
+ if (buf_size < 2 || AV_RB16(buf) && buf_size < 6) {
+ if (buf_size)
+ av_log(avctx, AV_LOG_DEBUG, "Parser input %d too small\n", buf_size);
+ return buf_size;
+ }
pc->packet_len = AV_RB16(buf);
if (pc->packet_len == 0) /* HD-DVD subpicture packet */
pc->packet_len = AV_RB32(buf+2);