Companies are rolling out patches to make devices safe, and Sony Mobile has released its statement on these vulnerabilities. It says that it will provide the necessary patches as part of its normal security update programme, and phones with the upcoming 5 January 2018 Android security update will be patched. See the full statement below.
Sony Mobile treats the security and privacy of customer data with the utmost seriousness. We are aware of "Spectre" and "Meltdown" and would like to reassure our users that protective patches have been provided as part of our ongoing Security Update Programme – patched devices will have Android Security Patch dated 2018-01-05 or later.
In addition to keeping device software up to date, users can also take extra steps to protect themselves by only downloading trusted applications from reputable stores and by keeping all apps updated to the latest versions.