hevc: Reject impossible dependent tile

[android-x86/external-ffmpeg.git] / libavcodec / hevc.c

diff --git a/libavcodec/hevc.c b/libavcodec/hevc.c
index 8b15ec5..e6fd5cf 100644 (file)
--- a/libavcodec/hevc.c
+++ b/libavcodec/hevc.c
@@ -1775,6 +1775,11 @@ static int hls_decode_entry(AVCodecContext *avctxt, void *isFilterThread)
     int y_ctb       = 0;
     int ctb_addr_ts = s->pps->ctb_addr_rs_to_ts[s->sh.slice_ctb_addr_rs];
 
+    if (!ctb_addr_ts && s->sh.dependent_slice_segment_flag) {
+        av_log(s->avctx, AV_LOG_ERROR, "Impossible initial tile.\n");
+        return AVERROR_INVALIDDATA;
+    }
+
     while (more_data && ctb_addr_ts < s->sps->ctb_size) {
         int ctb_addr_rs = s->pps->ctb_addr_ts_to_rs[ctb_addr_ts];