sudo disappears after latest update

Hello, I have a strange issue: my machine was updated via cron last noght. I rebooted this morning and several attempts, including rebooting into the older kernel do not seem to work in granting me sudo access. ~$ sudo dnf update [sudo] password for maitra: maitra is not in the sudoers file. This incident will be reported. The password is correct because otherwise I would get the notificaiton that it is not so so that is not the issue. Short of reinstalling, how do I get around this? Note that I do not have root account, so I am not sure about what to do. Many thanks and best wishes, Ranjan -- Important Notice: This mailbox is ignored: e-mails are set to be deleted on receipt. Please respond to the mailing list if appropriate. For those needing to send personal or professional e-mail, please use appropriate addresses. ____________________________________________________________ FREE 3D EARTH SCREENSAVER - Watch the Earth right on your desktop! Check it out at http://www.inbox.com/earth