Solved. The cryptsetup command must be executed as a root. The message is confusing.
Before my upgrade I had SUID bit sen ON on the cryptsetup. I did this long time ago and I forget it. This allowed me to execute this command as a normal user. The upgrade process replaced that command and - of curse - during the process the suid bit has been lost. -- can't install cryptsetup https://bugs.launchpad.net/bugs/97438 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs