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-rw-r--r--libavformat/tiertexseq.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/tiertexseq.c b/libavformat/tiertexseq.c
index bcce6749ea..60ac5ecd7e 100644
--- a/libavformat/tiertexseq.c
+++ b/libavformat/tiertexseq.c
@@ -110,7 +110,7 @@ static int seq_fill_buffer(SeqDemuxContext *seq, ByteIOContext *pb, int buffer_n
return AVERROR_INVALIDDATA;
seq_buffer = &seq->frame_buffers[buffer_num];
- if (seq_buffer->fill_size + data_size > seq_buffer->data_size)
+ if (seq_buffer->fill_size + data_size > seq_buffer->data_size || data_size <= 0)
return AVERROR_INVALIDDATA;
url_fseek(pb, seq->current_frame_offs + data_offs, SEEK_SET);