ldconfig --> sudo: you do not exist in the passwd database

Ok, I made a mistake and I'm struggling to fix it: I was looking for a libGL.so to link a project, and found it in a (conan-related) package that is mounted during build time. The default system /usr/lib64/libGL.so.1 didn't seem to get picked up (different versions/dependencies?) So I turned to ld.so.config to add the folder containing libGL.so, just under the only other line: include /etc/ld.so.config.d/* /hfs/xyz/conan-package-123/../usr/lib64/ # the line I added then I ran sudo ldconfig and then was greeted by a slew of errors of the form "ldconfig: /hfs/xyz/conan-package-123/../usr/lib64/libGL.so is not a symbolic link" linking still does not work, but worse, I seem to have lost sudo privileges, and can no longer either run sudo ldconfig, su ldconfig or edit/write /etc/ld.so.config. I also tried using local versions from my home-dir for both the config and cache files using the ldconfig flags -f and -C, I don't seem to get my privileges back. For the record, my /etc/passwd file is -rw-r--r-- root root and /etc is drwxr-xr-x root root, and pwck says wck: Permission denied. pwck: cannot lock /etc/passwd; try again later. Should I restart some service for that? Otherwise that would be a true catch 22. What can I do?