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Workaround and fixes for the current Core Dump Handling vulnerability affected kernels

Workaround and fixes for the current Core Dump Handling vulnerability affected kernels

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April, 26th. 2006:

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You are here: System->Tips and Tricks

Recovering the root password

This tip shows you a couple of ways to reset the root password if you've forgotten it.

The easiest way is of course to boot off a LiveCD, chroot into the primary hard disk as described in the Gentoo Install Guide and use passwd.

If you don't have a LiveCD, or the system doesn't have CDROM drive, you can reboot the system into single user mode to reset the password. Simply pass the options "init=/bin/sh" to the kernel from the bootloader menu. When the system boots it will drop you into a root shell. The disk will be mounted read-only so remount it read-write with

mount -o rw,remount /dev/ROOT
(be sure to change ROOT to your actual root partition). Edit /etc/shadow and remove the encrypted password. Reset the root password with passwd and reboot the system.

You should now be able to login with the new password.

From http://www.gentoo.org/news/en/gwn/20040301-newsletter.xml


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