On 7/29/20 12:38 PM, Brian Stinson wrote:

We are aware of the Boot Hole vulnerability in grub2 (CVE-2020-1073) and are working on releasing new packages for CentOS Linux 7, CentOS Linux 8 and CentOS Stream in response. These should make it out to a mirror near you shortly.

/!\ Secureboot Systems - Please do a full update /!\

CentOS Linux 8 and CentOS Stream systems with secureboot enabled MUST update the kernel, grub2, and shim packages together. As part of this CVE, we have re-issued the kernel and shim signing certificate authorities, and previously released EL8 kernels cannot boot in secureboot mode with the newer shim/grub2.

The following packages boot together in secureboot mode on CentOS Stream:

• kernel-4.18.0-227.el8 / kernel-rt-4.18.0-227.rt7.39.el8

• grub2-2.02-87.el8_2

• shim-x64-15-13.el8

The following packages boot together in secureboot mode on CentOS Linux 8:

• kernel-4.18.0-193.14.2.el8_2

• grub2-2.02-87.el8_2

• shim-x64-15-13.el8

For systems with CentOS Linux 7 or with secureboot disabled, we strongly recommend doing a full `dnf/yum update` to pick up all of the latest patches at the same time.

On behalf of the CentOS Team,

--

Brian Stinson

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CentOS-announce mailing list CentOS-announce@centos.org https://lists.centos.org/mailman/listinfo/centos-announce

This is a minor correction to the CVE number referenced in this earlier post.

CVE-2020-10713 is the correct assignment.

This is a link to the research article: https://eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/

And a link to the post on OSS Security with details about related CVEs: https://www.openwall.com/lists/oss-security/2020/07/29/3