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Corrupted Kernel

Posted December 14, 2017 3.6k views
Linux BasicsNetworkingUbuntu 16.04

I was practicing exploiting linux executables with shellcode when after a while i things start breaking with

Execle: Exec format error

After reboot droplet didn’t connect to internet. From dash board console I ran following commands.

$cat /var/mail/root says:
/bin/sh: execle: Exec format error

$ sudo service network-manager restart
sudo: unable to execute /usr/sbin/service: Exec format error

$ sudo update-grub
sudo: unable to execute /usr/sbin/update-grub: Exec format error

I think i corrupted the kernel, please help!!

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drs5ma
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drs5ma
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2 answers
Woet December 14, 2017

Make sure your kernel matches your architecture or just restore from your backup / reinstall.

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ryanpq December 14, 2017

Your best option will likely be to reach out to the support team via a ticket. They can boot your droplet into a recovery environment. This is a Debian based LiveCD image which will allow you to boot your droplet and mount it’s normal disk to make changes, chroot into your disk if needed, or start a temporary SFTP service to copy out needed files. The image must be mounted and removed by the support team and your droplet would then be accessible from the console in the control panel.

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