A security update for OpenSSL has been made available today which addresses several security vulnerabilities.

One of these (CVE-2014-3570) impacts 64-bit (x86_64) builds of Bitcoin, at least in theory. The remainder are low and moderate impact security issues, some of which may impact you depending on your configuration (e.g. if you use Bitcoin RPC with SSL/TLS).

Updates for the openssl packages in these repos are now available for x86_64 and i386. ARM builds will be posted in about four hours from now.

Remember to restart Bitcoin after installing the updates.