In plain words
Imagine you have a house with many locks on the doors and windows, but some of these locks have hidden problems that a burglar could use to get in. Google Chrome is like that house, and the company just fixed 108 of these lock problems.
What's broken
The specific bugs that were fixed include security issues that could be used by an attacker to do various things, but the details are not provided in the source.
How it actually works
When you use Google Chrome, it connects to many websites and servers on the internet, and these connections can be vulnerable to attacks if there are security flaws in the browser. The fixes in this update patch these flaws, so an attacker cannot use them to get into your device or steal your data. This is similar to how a guard at a house would check everyone who comes in, to make sure they are supposed to be there. In this case, the guard is the security system in Chrome, and the fixes make this system stronger.
Proof of concept
It is not clear from the source if there is a public proof-of-concept for these security fixes, but the fact that Google released an update with 108 fixes shows that they are taking the security of their browser seriously.
Is it real
It is not clear from the source if these security issues are being actively exploited in the wild, but updating Chrome to the latest version will protect you from these potential attacks.
What to do
To fix these security issues, you should update Google Chrome to the latest version, which is Chrome 154 for desktop and Chrome 155 for Android. This will patch the security flaws and make your browser more secure.