This fixes NULL pointer dereferencing.
Signed-off-by: Andreas Cadhalpun <andreas.cadhal...@googlemail.com>
---
libavformat/mlvdec.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavformat/mlvdec.c b/libavformat/mlvdec.c
index 48a429e..4b3bdc1 100644
--- a/libavformat/mlvdec.c
+++ b/libavformat/mlvdec.c
@@ -365,6 +365,11 @@ static int read_header(AVFormatContext *avctx)
if (ast)
ast->duration = ast->nb_index_entries;
+ if ((vst && !vst->nb_index_entries) || (ast && !ast->nb_index_entries)) {
+ av_log(avctx, AV_LOG_ERROR, "no index entries found\n");
+ return AVERROR_INVALIDDATA;
+ }
+
if (vst && ast)
avio_seek(pb, FFMIN(vst->index_entries[0].pos,
ast->index_entries[0].pos), SEEK_SET);
else if (vst)
--
2.6.2
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