In SQLite 3.27.2, interleaving reads and writes in a single transaction with an fts5 virtual table will lead to a NULL Pointer Dereference in fts5ChunkIterate in sqlite3.c. This is related to ext/fts5/fts5_hash.c and ext/fts5/fts5_index.c.
CREATE(Triage): {Link=https://nvd.nist.gov/vuln/detail/CVE-2019-9937 User=admin}
