On Mon, Jun 15, 2026 at 10:41:15AM +0200, Chris Hofstaedtler wrote: > On Sun, Jun 14, 2026 at 07:31:07PM -0300, Adilson dos Santos Dantas wrote: > > After upgrading util-linux to 2.42.1-4 it was impossible to use su. > > util-linux 2.42.1-4 switched to debhelper compat v14, which puts the > PAM files into /usr/lib/pam.d. > > > I got a "Permission denied" message, which makes it impossible to go to the > > root shell.
In my own testing, only `su -` is broken. A plain `su` works. >From what I can tell this is because `su -` uses the PAM config for `su-l`, which does stuff like `auth include su`. This include-variant is broken in the current libpam0g. cat /usr/lib/pam.d/su-l #%PAM-1.0 auth include su account include su password include su session optional pam_keyinit.so force revoke session include su Workaround for su users in the meantime: use `su`, not `su -`. Chris
