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this post was submitted on 20 Nov 2023
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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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Basically, you want to not disable
kernel.unprivileged_userns_clone.For a temporary solution that has to be redone after reboot, there is
sysctl kernel.unprivileged_userns_clone=1.For a lasting solution, consider
echo kernel.unprivileged_userns_clone=1 | sudo tee /etc/sysctl.d/99-enable-unpriv-userns.conf.In either case you're foregoing security for the sake of convenience/functionality, so I understand why you would rather not act upon either of them.
I don't know what the solution is that would be analogous to installing
bubblewrap-suid. Perhaps, it's worth exploring the projects found within the github page of Awesome Fedora Security for some pointers.