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-rw-r--r--libavformat/nutdec.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/nutdec.c b/libavformat/nutdec.c
index e86d8222d0..0b04aaad3e 100644
--- a/libavformat/nutdec.c
+++ b/libavformat/nutdec.c
@@ -199,6 +199,8 @@ static int decode_main_header(NUTContext *nut)
int tmp_stream, tmp_mul, tmp_pts, tmp_size, tmp_res, tmp_head_idx;
length = get_packetheader(nut, bc, 1, MAIN_STARTCODE);
+ if (length == (uint64_t)-1)
+ return AVERROR_INVALIDDATA;
end = length + avio_tell(bc);
nut->version = ffio_read_varlen(bc);