Grub2 updates for Red Hat systems are making some unbootable
([Security] Jul 30, 2020 16:44 UTC (Thu) (jake))
- Reference: 0000827573
- News link: https://lwn.net/Articles/827573/
- Source link:
As [1]reported in the comments on the [2]Grub2 secure-boot vulnerabilities report , the updates for grub2 for RHEL 8 and CentOS 8 are [3]making some systems unbootable . The boot problems are seemingly unrelated to whether the system has secure boot enabled. It may be worth waiting a bit for that to shake out.
[1] https://lwn.net/Articles/827504/
[2] https://lwn.net/Articles/827403/
[3] https://bugzilla.redhat.com/show_bug.cgi?id=1861977
[1] https://lwn.net/Articles/827504/
[2] https://lwn.net/Articles/827403/
[3] https://bugzilla.redhat.com/show_bug.cgi?id=1861977
Grub2 updates for Red Hat systems are making some unbootable
According to comments on the HN post ( [1]https://news.ycombinator.com/item?id=23999212 ), this is also affecting at least Ubuntu and Debian: [2]https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1889509
[1] https://news.ycombinator.com/item?id=23999212
[2] https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1889509
Grub2 updates for Red Hat systems are making some unbootable
According to comments on the HN post ( [1]https://news.ycombinator.com/item?id=23999212 ), this is also affecting at least Ubuntu and Debian: [2]https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1889509
[1] https://news.ycombinator.com/item?id=23999212
[2] https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1889509
Also on Debian based systems
This also happened on debian 10 (buster). Only my bios based systems had this problem, efi works fine. (I also read online, that these are the observations from other people)
For me, chrooting into the broken system (or doing it while the system is still running), `grub-install /dev/sda` solved it for me.
Also on Debian based systems
For anyone reading that, never do that grub install command on a UEFI boot system. It will ruin it forever in hard to fix ways.
Also on Debian based systems
For anyone reading that, never do that grub install command on a UEFI boot system. It will ruin it forever in hard to fix ways.