This update provides erlang 18.3.4.5 and fixes the following issues:

- crypto: Key exchange algorithms
diffie-hellman-group-exchange-sha- optimized, up to a factor of
11 for the slowest ( = biggest and safest) one.
- erts: A bug has been fixed where if erlang was started +B on a
unix platform it would be killed by a SIGUSR2 signal when
creating a crash dump.
- erts: Calls to erl_drv_send_term() or erl_drv_output_term()
from a non-scheduler thread while the corresponding port was
invalid caused the emulator to enter an inconsistent state
which eventually caused an emulator crash.
- erts: Driver and NIF operations accessing processes or ports
could cause an emulator crash when used from non-scheduler
threads.
- erts: Fix bug in binary_to_term for binaries created by
term_to_binary with option compressed. The bug can cause badarg
exception for a valid binary when Erlang VM is linked against a
zlib library of version 1.2.9 or newer. Bug exists since OTP
17.0.
- inets: Shutdown gracefully on connection or TLS handshake
errors
- ssh: The key exchange algorithm
diffie-hellman-group-exchange-sha- has a server-option
{dh_gex_limits,{Min,Max}}. There was a hostkey signature
validation error on the client side if the option was used and
the Min or the Max differed fromthe corresponding values
obtained from the client.
- ssh: Key exchange algorithms diffie-hellman-group-exchange-sha-
optimized, up to a factor of 11 for the slowest ( = biggest and
safest) one.