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-rw-r--r--libavcodec/indeo4.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/libavcodec/indeo4.c b/libavcodec/indeo4.c
index f1ef02a74c..dbf24fac2a 100644
--- a/libavcodec/indeo4.c
+++ b/libavcodec/indeo4.c
@@ -352,6 +352,12 @@ static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band,
av_log(avctx, AV_LOG_ERROR, "Custom scan pattern encountered!\n");
return AVERROR_INVALIDDATA;
}
+ if (scan_indx > 4 && scan_indx < 10) {
+ if (band->blk_size != 4)
+ return AVERROR_INVALIDDATA;
+ } else if (band->blk_size != 8)
+ return AVERROR_INVALIDDATA;
+
band->scan = scan_index_to_tab[scan_indx];
band->quant_mat = get_bits(&ctx->gb, 5);