Ubuntu 17.10 corrupted bios Lenovo with USB boot device

The bug is fixed in the 'artful dot one' release 17.10.1, that you find at http://releases.ubuntu.com/17.10.1/

Ubuntu 17.10.1 ISOs Now Available To Avoid Thrashing Some UEFI Systems

It was a BIOS/UEFI corrupting problem but fortunately for affected users a software fix was discovered to make the hardware happy again.

It's important to note that this 17.10.1 ISO re-release does not have any KPTI/Retpoline for Meltdown/Spectre mitigation or other changes. So it's still important to update your system once installed.