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-rw-r--r--libavformat/mov.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/mov.c b/libavformat/mov.c
index f2a66b8a95..a157d60330 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -3471,7 +3471,7 @@ static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
}
}
total_size += 8;
- if (a.size == 1) { /* 64 bit extended size */
+ if (a.size == 1 && total_size + 8 <= atom.size) { /* 64 bit extended size */
a.size = avio_rb64(pb) - 8;
total_size += 8;
}