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====================================================================                   
Red Hat Security Advisory

Synopsis:          Moderate: grub2 security update
Advisory ID:       RHSA-2022:8800-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2022:8800
Issue date:        2022-12-06
CVE Names:         CVE-2022-2601 CVE-2022-3775
====================================================================
1. Summary:

An update for grub2 is now available for Red Hat Enterprise Linux 8.2
Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications
Update Service, and Red Hat Enterprise Linux 8.2 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux BaseOS AUS (v. 8.2) - aarch64, noarch, x86_64
Red Hat Enterprise Linux BaseOS E4S (v. 8.2) - aarch64, noarch, ppc64le, x86_64
Red Hat Enterprise Linux BaseOS TUS (v. 8.2) - aarch64, noarch, x86_64

3. 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.

4. 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

5. Bugs fixed (https://bugzilla.redhat.com/):

2112975 - CVE-2022-2601 grub2: Buffer overflow in grub_font_construct_glyph() can lead to out-of-bound write and possible secure boot bypass
2138880 - CVE-2022-3775 grub2: Heap based out-of-bounds write when redering certain unicode sequences

6. Package List:

Red Hat Enterprise Linux BaseOS AUS (v. 8.2):

Source:
grub2-2.02-87.el8_2.11.src.rpm

aarch64:
grub2-debuginfo-2.02-87.el8_2.11.aarch64.rpm
grub2-debugsource-2.02-87.el8_2.11.aarch64.rpm
grub2-efi-aa64-2.02-87.el8_2.11.aarch64.rpm
grub2-efi-aa64-cdboot-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-debuginfo-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-extra-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-extra-debuginfo-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-minimal-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-minimal-debuginfo-2.02-87.el8_2.11.aarch64.rpm

noarch:
grub2-common-2.02-87.el8_2.11.noarch.rpm
grub2-efi-aa64-modules-2.02-87.el8_2.11.noarch.rpm
grub2-efi-ia32-modules-2.02-87.el8_2.11.noarch.rpm
grub2-efi-x64-modules-2.02-87.el8_2.11.noarch.rpm
grub2-pc-modules-2.02-87.el8_2.11.noarch.rpm
grub2-ppc64le-modules-2.02-87.el8_2.11.noarch.rpm

x86_64:
grub2-debuginfo-2.02-87.el8_2.11.x86_64.rpm
grub2-debugsource-2.02-87.el8_2.11.x86_64.rpm
grub2-efi-ia32-2.02-87.el8_2.11.x86_64.rpm
grub2-efi-ia32-cdboot-2.02-87.el8_2.11.x86_64.rpm
grub2-efi-x64-2.02-87.el8_2.11.x86_64.rpm
grub2-efi-x64-cdboot-2.02-87.el8_2.11.x86_64.rpm
grub2-pc-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-debuginfo-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-efi-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-efi-debuginfo-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-extra-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-extra-debuginfo-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-minimal-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-minimal-debuginfo-2.02-87.el8_2.11.x86_64.rpm

Red Hat Enterprise Linux BaseOS E4S (v. 8.2):

Source:
grub2-2.02-87.el8_2.11.src.rpm

aarch64:
grub2-debuginfo-2.02-87.el8_2.11.aarch64.rpm
grub2-debugsource-2.02-87.el8_2.11.aarch64.rpm
grub2-efi-aa64-2.02-87.el8_2.11.aarch64.rpm
grub2-efi-aa64-cdboot-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-debuginfo-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-extra-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-extra-debuginfo-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-minimal-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-minimal-debuginfo-2.02-87.el8_2.11.aarch64.rpm

noarch:
grub2-common-2.02-87.el8_2.11.noarch.rpm
grub2-efi-aa64-modules-2.02-87.el8_2.11.noarch.rpm
grub2-efi-ia32-modules-2.02-87.el8_2.11.noarch.rpm
grub2-efi-x64-modules-2.02-87.el8_2.11.noarch.rpm
grub2-pc-modules-2.02-87.el8_2.11.noarch.rpm
grub2-ppc64le-modules-2.02-87.el8_2.11.noarch.rpm

ppc64le:
grub2-debuginfo-2.02-87.el8_2.11.ppc64le.rpm
grub2-debugsource-2.02-87.el8_2.11.ppc64le.rpm
grub2-ppc64le-2.02-87.el8_2.11.ppc64le.rpm
grub2-tools-2.02-87.el8_2.11.ppc64le.rpm
grub2-tools-debuginfo-2.02-87.el8_2.11.ppc64le.rpm
grub2-tools-extra-2.02-87.el8_2.11.ppc64le.rpm
grub2-tools-extra-debuginfo-2.02-87.el8_2.11.ppc64le.rpm
grub2-tools-minimal-2.02-87.el8_2.11.ppc64le.rpm
grub2-tools-minimal-debuginfo-2.02-87.el8_2.11.ppc64le.rpm

x86_64:
grub2-debuginfo-2.02-87.el8_2.11.x86_64.rpm
grub2-debugsource-2.02-87.el8_2.11.x86_64.rpm
grub2-efi-ia32-2.02-87.el8_2.11.x86_64.rpm
grub2-efi-ia32-cdboot-2.02-87.el8_2.11.x86_64.rpm
grub2-efi-x64-2.02-87.el8_2.11.x86_64.rpm
grub2-efi-x64-cdboot-2.02-87.el8_2.11.x86_64.rpm
grub2-pc-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-debuginfo-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-efi-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-efi-debuginfo-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-extra-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-extra-debuginfo-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-minimal-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-minimal-debuginfo-2.02-87.el8_2.11.x86_64.rpm

Red Hat Enterprise Linux BaseOS TUS (v. 8.2):

Source:
grub2-2.02-87.el8_2.11.src.rpm

aarch64:
grub2-debuginfo-2.02-87.el8_2.11.aarch64.rpm
grub2-debugsource-2.02-87.el8_2.11.aarch64.rpm
grub2-efi-aa64-2.02-87.el8_2.11.aarch64.rpm
grub2-efi-aa64-cdboot-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-debuginfo-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-extra-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-extra-debuginfo-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-minimal-2.02-87.el8_2.11.aarch64.rpm
grub2-tools-minimal-debuginfo-2.02-87.el8_2.11.aarch64.rpm

noarch:
grub2-common-2.02-87.el8_2.11.noarch.rpm
grub2-efi-aa64-modules-2.02-87.el8_2.11.noarch.rpm
grub2-efi-ia32-modules-2.02-87.el8_2.11.noarch.rpm
grub2-efi-x64-modules-2.02-87.el8_2.11.noarch.rpm
grub2-pc-modules-2.02-87.el8_2.11.noarch.rpm
grub2-ppc64le-modules-2.02-87.el8_2.11.noarch.rpm

x86_64:
grub2-debuginfo-2.02-87.el8_2.11.x86_64.rpm
grub2-debugsource-2.02-87.el8_2.11.x86_64.rpm
grub2-efi-ia32-2.02-87.el8_2.11.x86_64.rpm
grub2-efi-ia32-cdboot-2.02-87.el8_2.11.x86_64.rpm
grub2-efi-x64-2.02-87.el8_2.11.x86_64.rpm
grub2-efi-x64-cdboot-2.02-87.el8_2.11.x86_64.rpm
grub2-pc-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-debuginfo-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-efi-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-efi-debuginfo-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-extra-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-extra-debuginfo-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-minimal-2.02-87.el8_2.11.x86_64.rpm
grub2-tools-minimal-debuginfo-2.02-87.el8_2.11.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2022-2601
https://access.redhat.com/security/cve/CVE-2022-3775
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2022 Red Hat, Inc.
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