That the perfect operating system does not exist is something well known. Each one has its strengths and weaknesses, and one of the good things we Linux users mention is that systems based on its kernel are secure. Is this true? Well, several points must be taken into account: yes, it is designed to be secure, but if we can sleep more peacefully than Windows users, for example, it is actually because there are so few of us that malicious users are not interested. For that and because Linux fixes security flaws very quickly.
How many times have you read a news about a security flaw in Linux, you have turned on your PC and you already had the patch waiting as an update? It is clear that this is not always the case. Earlier this month we publish an article about a bug that was around for no less than 12 years, but that's unusual. Even accounting for these failures, the average number of days that pass between the discovery of the vulnerability and your patch is 25 days old.
Linux is the fastest, and Apple beats Microsoft
These data posted Google through your Project Zero. Companies such as Samsung, Oracle or Mozilla also appear on the list, but if we focus on those that develop operating systems, Linux corrects them in (on average) 25 days, Google, who in addition to Chrome is also responsible for Android, in 44 , Apple at 69 and Microsoft at 83.
As for the number of bugs, who comes out worst of the above is Apple, with 84, followed closely by Microsoft, with 80. It is worth remembering here that Microsoft does not develop as many systems as Apple, which works on macOS, iOS, iPadOS, tvOS... But the data is what it is. Already far from Apple and Microsoft is Google, with 56 bugs, and less than half were found in Linux, 25.
These data correspond to what was found y entre 2019 2021, and I think the important thing here is speed. The Linux community is very active, and when they discover a major bug they can fix it in hours. We won't have a perfect operating system, like no one else, but I think we can be calmer than Microsoft and Apple users.