OSV-2021-1809 Heap-buffer-overflow in ujson.cpython-38-x86_64-linux-gnu.so

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=44973 Crash type: Heap-buffer-overflow WRITE 1 Crash state: ujson.cpython-38-x8664-linux-gnu.so ujson.cpython-38-x8664-linux-gnu.so ujson.cpython-38-x8664-linux-gnu.so...