In SQLite 3.27.2, running fts5 prefix queries inside a transaction could trigger a heap-based buffer over-read in fts5HashEntrySort in sqlite3.c, which may lead to an information leak. This is related to ext/fts5/fts5_hash.c.
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00026.html
https://lists.debian.org/debian-lts-announce/2020/08/msg00037.html
https://security.gentoo.org/glsa/201908-09
https://security.netapp.com/advisory/ntap-20190416-0005/
https://usn.ubuntu.com/4019-1/
https://www.oracle.com/security-alerts/cpujan2020.html
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html