diff --git a/libavcodec/dvbsubdec.c b/libavcodec/dvbsubdec.c index 98619f9631..b683109643 100644 --- a/libavcodec/dvbsubdec.c +++ b/libavcodec/dvbsubdec.c @@ -1302,6 +1302,15 @@ static int dvbsub_parse_page_segment(AVCodecContext *avctx, region_id = *buf++; buf += 1; + display = ctx->display_list; + while (display && display->region_id != region_id) { + display = display->next; + } + if (display) { + av_log(avctx, AV_LOG_ERROR, "duplicate region\n"); + break; + } + display = tmp_display_list; tmp_ptr = &tmp_display_list;