Meltdown and Spectre are known vulnerabilities in Processors that could compromise security offered by any Operating System. All big players are worrying about these two vulnerabilities as they are using Intel, AMD and ARM based processors which are not 100% immune to these attacks. Microsoft and Google already released patches or techniques to fix Meltdown and Spectre vulnerability. As an end user, do not think too much about these computer vulnerabilities. There is merely not much in your hands to get protection against these Meltdown and Spectre Bugs.
What is Meltdown
Processor does speculative or guess work to save time. Speculative work is the processing work done by a processor even before the logical condition is evaluated. User may select YES or NO on a particular options window. Processor is ready with the subsequent action part by proactively executing the code and keeping the output for display or discard. This speculative processing opens a loop hole which gives access to non privileged applications to access data inside privileged memory like Operating System Kernel.
What is Spectre
Spectre is a vulnerability that allows one application access to memory part of another application. Usually, all applications run in their own memory barriers without peeping outside the barrier. This memory separation barrier is not working because of Spectre Vulnerability.
Fix Meltdown and Spectre Vulnerabilities in Windows PC
Microsoft has already released a Patch kb4056892 January 4, 2018 to fix Meltdown and Spectre vulnerabilities. You can get the Patch automatically using regular Windows Update Page. Alternatively, you can download the patch from Microsoft Patch Website. Microsoft patched even previous operating systems too.
Fix Meltdown and Spectre Vulnerabilities in Google Chrome Browser
If you are a Chrome User, you need to Fix Meltdown and Spectre. Fixing meltdown is in the hands of Processor Manufacturers and Operating System Providers. Spectre bug can be fixed by changing the Chrome Flags. Chrome Browser has built in Flags that can be enabled or disabled. Most of the Chrome Browser Flags are experimental. Type in the address bar, chrome://flags. Just search for 'Isolation'. You will find Strict Site Isolation Flag. Enable the Flag. Relaunch or Restart the Chrome Browser. That is it.
Fix Meltdown and Spectre Vulnerabilities in Android Phone
Most of the Android Phones use ARM Processors which are also not immune to Meltdown and Spectre Vulnerabilities. Billions of Android Phones are out and in use all over the world. Android Phones from Google like Pixel 1, Pixel 2, Pixel 2 XL and Nexus Series phones receive the update. Check for available updates and complete the Update Process. Other than Google, no other manufacturer has released any patch to fix Meltdown and Spectre Vulnerabilities. Popular Android Smartphone brands around the world are Samsung, Xiaomi, Motorola, Huawei, Oppo, OnePlus, Vivo and Nokia. All flagship phones can expect the fix within few weeks. You can unlock Redmi Note 3 to install latest OS ROM Builds without waiting from Xiaomi. This may or may not protect your Xiaomi phone from Meltdown and Spectre Vulnerabilities.
Fix Meltdown and Spectre Vulnerabilities in iPhone and iPad
There is a news that Apple already rolled out updates to fix Meltdown and Spectre Vulnerabilities in iOS 11.2 OS update. All Apple products get free OS updates as and when they are available. Forget about the slow and fast debate after upgrading OS to the newest 11.2 version. It is an essential update which you can not neglect.
Fix Meltdown and Spectre Vulnerabilities in Linux and Ubuntu
Linux communities are actively discussing about getting a fix for Meltdown and Spectre bugs. Good news is that you will be getting patches to fix Meltdown and Spectre vulnerabilities on January 9, 2018. Mostly, Linux operating systems are used in Servers that server Webpages, Audio, Video and any thing. All Virtual Private Severs, Cloud Servers and Shared Hosting servers should be patched to fix Meltdown and Spectre Vulnerabilities.