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https://github.com/jnwatson/py-lmdb/blob/py-lmdb_2.2.0/ChangeLog Version 2.1.0 fixes the following CVEs: - **CVE-2019-16224**: heap buffer overflow via `MDB_DUPFIXED` without `MDB_DUPSORT` in on-disk `md_flags`. (#429) - **CVE-2019-16225**: `SIGSEGV` from `P_DIRTY` flag set on mmap'd disk pages, causing `mdb_page_touch()` to skip copy-on-write. (#429) - **CVE-2019-16226**: out-of-bounds `memmove` in `mdb_node_del` via corrupt `mn_hi` making `NODEDSZ()` huge. (#429) - **CVE-2019-16227**: NULL pointer dereference of `mc_xcursor` when `F_DUPDATA` is set on a node in a non-DUPSORT database. (#429) - **CVE-2019-16228**: divide-by-zero from zero `mm_psize` in meta page header. (#429) Signed-off-by: Bernd Kuhls <bernd@kuhls.net> Signed-off-by: Julien Olivain <ju.o@free.fr>