This update for openssh fixes the following issues: Security issue fixed: - CVE-2017-15906: Stricter checking of operations in read-only mode in sftp server . Bug fixes: - FIPS: Startup selfchecks . - FIPS: Silent complaints about unsupported key exchange methods . - Refine handling of sockets for X11 forwarding to remove reintroduced CVE-2008-1483 . - Test configuration before running daemon to prevent looping resulting in service shutdown