Displaying 2 results from an estimated 2 matches for "grub2bootloader".
2020 Jul 29
3
After update to 8 (2004) ... system is unbootable - UEFI Secure boot
Am 16.06.20 um 22:04 schrieb Fabian Arrotin:
> On 16/06/2020 15:06, Leon Fauster via CentOS wrote:
>> Hi all,
>>
>> I updated a Dell XPS laptop from CentOS 8.1 (1911) to 8.2 (2004).
>>
>> Installed kernels are
>> kernel-4.18.0-147.5.1.el8_1.x86_64
>> kernel-4.18.0-147.8.1.el8_1.x86_64
>> kernel-4.18.0-193.6.3.el8_2.x86_64
>>
>>
2020 Jul 29
0
After update to 8 (2004) ... system is unbootable - UEFI Secure boot
...ends on a new shim and grub2 package I
> wonder about the implications for my XPS hardware ...
>
The following article discusses a way to add a hash for older kernels to
the Allow List that should allow older kernels to continue to boot:
https://access.redhat.com/security/vulnerabilities/grub2bootloader
Quoting...
Red Hat Enterprise Linux 8
Due to hardening within the kernel, which is released as part of these
updates, previous Red Hat Enterprise Linux 8 kernel versions have not
been added to shim?s allow list. If you are running with Secure Boot
enabled, and the user needs to boot to an old...