I wanted to update my SSL certs on my Pi 3B+ which is running NextcloudPi. I did not touch the Raspbian System on it for at least 2 months. I am the only one who is able to login.

I connect via SSH using XFCE Terminal on Manjaro:

ssh pi@

Login works perfectly, but if then I try to use

sudo su
sudo apt-get update

and many more I get Segmentation fault as error.

Commands like sudo vi /etc/...default.conf do actually work. Like already mentioned, I did not even access the Pi for 2 months or longer, and before everything worked just fine.

It is running NextcloudPi on v1.6.8.


Segmentation fault is a major software error, caused by invalid memory addresses in the code. It is not something you can typically cause as a user through normal fiddling using standard packages . Except in extremely rare cases where it is a bug that is exposed by something you do.

Assuming you are using repository packages and not compiling from source this is most likely a corrupt program somewhere, most commonly SD card corruption either due to age/wear or other failure. In the worst case this could be a binary replaced as an attempted exploit .

I would reimage a new SD card and see if this resolves the issue

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