X-Git-Url: https://git.piment-noir.org/?p=deb_ffmpeg.git;a=blobdiff_plain;f=ffmpeg%2Flibavformat%2Fmatroskadec.c;fp=ffmpeg%2Flibavformat%2Fmatroskadec.c;h=e9ba1e967e6ca567cac863f8c73054dbd43da85f;hp=c81b5a04af92409f43faca738d5f4fd03b58cc3b;hb=dcebb6f35d810c9009a455808b016c790bb633b4;hpb=f6fa7814ccfe3e76514b36cf04f5cd3cb657c8cf

diff --git a/ffmpeg/libavformat/matroskadec.c b/ffmpeg/libavformat/matroskadec.c
index c81b5a0..e9ba1e9 100644
--- a/ffmpeg/libavformat/matroskadec.c
+++ b/ffmpeg/libavformat/matroskadec.c
@@ -1414,13 +1414,17 @@ static void matroska_execute_seekhead(MatroskaDemuxContext *matroska)
     EbmlList *seekhead_list = &matroska->seekhead;
     int64_t before_pos = avio_tell(matroska->ctx->pb);
     int i;
+    int nb_elem;
 
     // we should not do any seeking in the streaming case
     if (!matroska->ctx->pb->seekable ||
         (matroska->ctx->flags & AVFMT_FLAG_IGNIDX))
         return;
 
-    for (i = 0; i < seekhead_list->nb_elem; i++) {
+    // do not read entries that are added while parsing seekhead entries
+    nb_elem = seekhead_list->nb_elem;
+
+    for (i = 0; i < nb_elem; i++) {
         MatroskaSeekhead *seekhead = seekhead_list->elem;
         if (seekhead[i].pos <= before_pos)
             continue;