Two recently detected security flaws currently named “Meltdown” and “Spectre” are causing Apple, Microsoft, Google, Intel, and others to release security updates to fix any potential problem.  The flaws potentially affect all recent computers, smartphones, and tablets that use a CPU performance feature called speculative execution.  There is no evidence that the flaws have been exploited at this time.  The general recommendation is to download updates for all devices.

Current Apple products may have the security flaws with the exception of the Apple Watch.  Apple is continuing to work on updates and released a statement at https://support.apple.com/en-us/HT208394.

Microsoft issued guidance for Windows users, SQL Server, Windows Server, and has updated most of its Azure infrastructure and will continue to do so.  Security update KB4056890 also updates Internet Explorer and Edge browsers.   Microsoft also issued update KB4056892 for various Windows versions but notes that some AMD processor machines to stop working after installing it.

Google recommended that Chrome users should turn on site isolation.  Google also responded with these blog posts:
https://support.google.com/faqs/answer/7622138
https://googleprojectzero.blogspot.com/2018/01/reading-privileged-memory-with-side.html

Mozilla is working on updates and a fix is available in Firefox 57.0.4 version.

Amazon has updated its servers already and will continue to do so.

Intel released a statement as well and is releasing updates.  It also reported some systems rebooted more frequently after the updates.  AMD also released a statement on their CPUs and speculative execution.

Oracle issued updates for MySQL, Java, PeopleSoft and other products that it maintains.

The CERT Vulnerability Notes Database has logged this issue as Vulnerability Note VU#584653.

eWeek reported that Linux 4.15 was released with Meltdown and Spectre patches and that further patches would be made for this issue.

More information can be found at https://spectreattack.com.