From 88a97d660d65b8d5ac2ca719969c0096ace00114 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 15 Apr 2012 21:01:35 +0200 Subject: [PATCH] indeo5: check for unsupported luma block type Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer --- libavcodec/indeo5.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/indeo5.c b/libavcodec/indeo5.c index d0aea84f5a..b35486b106 100644 --- a/libavcodec/indeo5.c +++ b/libavcodec/indeo5.c @@ -167,6 +167,11 @@ static int decode_gop_header(IVI5DecContext *ctx, AVCodecContext *avctx) blk_size = 8 >> get_bits1(&ctx->gb); mb_size = blk_size << !mb_size; + if (p==0 && blk_size==4) { + av_log(avctx, AV_LOG_ERROR, "4x4 luma blocks are unsupported!\n"); + return AVERROR_PATCHWELCOME; + } + blk_size_changed = mb_size != band->mb_size || blk_size != band->blk_size; if (blk_size_changed) { band->mb_size = mb_size;