this post was submitted on 15 Jul 2024
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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Isn't that irrelevant since tiocsti is disabled on modern kernels?
Is it?
Well the exploit in the CVE needs the kernel function.
And it's disabled as default since 6.2.
my ubuntu 22 AWS VM only got 6.2 in september, and I haven't rebooted yet so it's still on 5.15. probably tons of desktops and servers are still using < 6.2
Which is why they said "modern" kernels. LTS systems are usually not going for modern. :)
we can disagree on the definition of modern.
That's true. It varies from person to person. I, for example, am an Arch user, so modern for me is only around a year or so. Ubuntu 22.04 is old in my eyes, mostly because a newer LTS was released after it.
You might define Ubuntu 22.04 as new, because it's still fully supported.
It's just a question of how you define modern/recent.
Well, “modern” is a relative term, so that might not have been a good pick...