Synology DSM 5.2-5644 fixes several vulnerabilities and improves stability

Synology

Synology has released DSM 5.2-5644 which upgrades PHP to version 5.5.30 that patches several vulnerabilities found in the older version of PHP. In addition DSM 5.2-5644 also improves stability across many different functions such as Btrfs file system, FTP connections, NTP service. DSM 5.2-5644 also takes care of the issue where a DSM critical patch could not be manually uploaded when the system was in a Hybrid HA cluster.

What’s new in Synology DSM 5.2-5644

  • This update includes all bug fixes as well as security fixes in the previously released critical updates since DSM 5.2-5592.

Issues fixed in Synology DSM 5.2-5644

  • Improved stability of FTP connections.
  • Improved stability when copying large files on DS216play.
  • Improved general stability of NTP service.
  • Supports Data Scrubbing for iSCSI LUN (Block-Level) in Storage Manager.
  • Improved the stability of encrypted backup in models with ARM processors.
  • Improved general stability of Btrfs file system.
  • Increased the connection limit for Log Receiving in Log Center.
  • Upgraded PHP to 5.5.30 to address multiple vulnerabilities (CVE-2015-5589, CVE-2015-5590, CVE-2015-6834, CVE-2015-6835, CVE-2015-6836, CVE-2015-6837, CVE-2015-6838, and CVE-2015-3152).
  • Fixed an issue where a DSM critical patch could not be manually uploaded when the system was in a Hybrid HA cluster.

How to install Synology DSM 5.2-5644

You can download the Synology DSM 5.2-5644 from the Synology Download Center or by logging into your Synology dashboard and going to: Control Panel > System > Update & Restore.

In addition, the Anti-virus Essentials package also has an upgrade available (adds support for DS216play) that should be installed as well. If you’re not already running antivirus I would recommend reading the Securing your Synology NAS post.

Was this blog post helpful? If so, please VOTE for me in the Top vBlog. Thank you!

If you’re looking to get in touch, follow me on Twitter!