Issued:
2022-11-16
Updated:
2022-11-16

RHSA-2022:8494 - Moderate: grub2 security update

Synopsis

Moderate: grub2 security update

Type/Severity

Security Advisory Moderate

Topic

An update for grub2 is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The grub2 packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices.

Security Fix(es):

  • grub2: Buffer overflow in grub_font_construct_glyph() can lead to out-of-bound write and possible secure boot bypass (CVE-2022-2601)

  • grub2: Heap based out-of-bounds write when redering certain unicode sequences (CVE-2022-3775)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions8.1x86_64
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions8.1ppc64le

Updated Packages

  • grub2-debuginfo-2.02-87.el8_1.11.x86_64.rpm
  • grub2-tools-minimal-debuginfo-2.02-87.el8_1.11.x86_64.rpm
  • grub2-ppc64le-modules-2.02-87.el8_1.11.noarch.rpm
  • grub2-tools-extra-debuginfo-2.02-87.el8_1.11.ppc64le.rpm
  • grub2-tools-extra-2.02-87.el8_1.11.ppc64le.rpm
  • grub2-efi-ia32-modules-2.02-87.el8_1.11.noarch.rpm
  • grub2-debuginfo-2.02-87.el8_1.11.ppc64le.rpm
  • grub2-efi-x64-modules-2.02-87.el8_1.11.noarch.rpm
  • grub2-ppc64le-2.02-87.el8_1.11.ppc64le.rpm
  • grub2-tools-2.02-87.el8_1.11.x86_64.rpm
  • grub2-tools-minimal-debuginfo-2.02-87.el8_1.11.ppc64le.rpm
  • grub2-tools-efi-debuginfo-2.02-87.el8_1.11.x86_64.rpm
  • grub2-tools-minimal-2.02-87.el8_1.11.ppc64le.rpm
  • grub2-tools-extra-debuginfo-2.02-87.el8_1.11.x86_64.rpm
  • grub2-tools-minimal-2.02-87.el8_1.11.x86_64.rpm
  • grub2-efi-ia32-cdboot-2.02-87.el8_1.11.x86_64.rpm
  • grub2-debugsource-2.02-87.el8_1.11.ppc64le.rpm
  • grub2-2.02-87.el8_1.11.src.rpm
  • grub2-tools-2.02-87.el8_1.11.ppc64le.rpm
  • grub2-pc-2.02-87.el8_1.11.x86_64.rpm
  • grub2-efi-aa64-modules-2.02-87.el8_1.11.noarch.rpm
  • grub2-tools-debuginfo-2.02-87.el8_1.11.ppc64le.rpm
  • grub2-efi-x64-cdboot-2.02-87.el8_1.11.x86_64.rpm
  • grub2-tools-extra-2.02-87.el8_1.11.x86_64.rpm
  • grub2-efi-ia32-2.02-87.el8_1.11.x86_64.rpm
  • grub2-efi-x64-2.02-87.el8_1.11.x86_64.rpm
  • grub2-pc-modules-2.02-87.el8_1.11.noarch.rpm
  • grub2-common-2.02-87.el8_1.11.noarch.rpm
  • grub2-tools-debuginfo-2.02-87.el8_1.11.x86_64.rpm
  • grub2-tools-efi-2.02-87.el8_1.11.x86_64.rpm
  • grub2-debugsource-2.02-87.el8_1.11.x86_64.rpm

Fixes

CVEs

References

Additional information