It leads to an assert in ff_read_packet().
Signed-off-by: Andreas Rheinhardt <[email protected]>
---
libavformat/sierravmd.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libavformat/sierravmd.c b/libavformat/sierravmd.c
index 531fc41531..40bcb77986 100644
--- a/libavformat/sierravmd.c
+++ b/libavformat/sierravmd.c
@@ -174,6 +174,8 @@ static int vmd_read_header(AVFormatContext *s)
avpriv_set_pts_info(vst, 33, num, den);
avpriv_set_pts_info(st, 33, num, den);
}
+ if (!s->nb_streams)
+ return AVERROR_INVALIDDATA;
toc_offset = AV_RL32(&vmd->vmd_header[812]);
vmd->frame_count = AV_RL16(&vmd->vmd_header[6]);
@@ -241,6 +243,8 @@ static int vmd_read_header(AVFormatContext *s)
current_audio_pts++;
break;
case 2: /* Video Chunk */
+ if (!vst)
+ break;
vmd->frame_table[total_frames].frame_offset = current_offset;
vmd->frame_table[total_frames].stream_index =
vmd->video_stream_index;
vmd->frame_table[total_frames].frame_size = size;
--
2.20.1
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