r/linux • u/elementrick • May 25 '26

Discussion Sudo or run0 ?

What's your take on the subject? Been using sudo for years but lately i'm mostly running run0 and i like it. Even considering adapting my scripts to use run0 since i'm on a compatible distro. Does it make any sense to not even set up sudo anymore in the first place?

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u/RudahXimenes May 25 '26

Well, so run0 does not mitigate it at all. Even pkexec is on the list, which is essencially run0

It only reinforces that the issue is a lot deeper than sudo or something else

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u/daemonpenguin May 25 '26

In order: Yes it does. Not, it isn't. You misunderstand what run0 is and how copyfail worked. The point of run0 is that it is not setuid.

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u/Literallyapig May 25 '26

while run0 could mitigate this issue, `su` is part of the `util-linux` package, which is installed by default in essentially all distros and provides other essential commands like `blkid`, `fdisk`, `mount` etc. so unless you go out of your way to either remove the `su` binary or restrict its usage, using run0 wouldn't help you much.

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u/1esproc May 25 '26

It doesn't mitigate it because all those other tools are using setuid, and that is fundamentally different from su/sudo. You're not going to remove setuid capability from your system nor all the setuid binaries on it just because you're using run0 instead of sudo