Home / mailings [RHSA-2022:8900-01] Important: grub2 security update
Posted on 08 December 2022
RedHat===================================================================== Red Hat Security Advisory
Synopsis: Important: grub2 security update
Advisory ID: RHSA-2022:8900-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:8900
Issue date: 2022-12-08
CVE Names: CVE-2022-28733
=====================================================================
1. Summary:
An update for grub2 is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact
of Important. 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 Client (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - 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: Integer underflow in grub_net_recv_ip4_packets (CVE-2022-28733)
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/):
2083339 - CVE-2022-28733 grub2: Integer underflow in grub_net_recv_ip4_packets
6. Package List:
Red Hat Enterprise Linux Client (v. 7):
Source:
grub2-2.02-0.87.el7_9.11.src.rpm
noarch:
grub2-common-2.02-0.87.el7_9.11.noarch.rpm
grub2-efi-ia32-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-efi-x64-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-pc-modules-2.02-0.87.el7_9.11.noarch.rpm
x86_64:
grub2-2.02-0.87.el7_9.11.x86_64.rpm
grub2-debuginfo-2.02-0.87.el7_9.11.x86_64.rpm
grub2-efi-ia32-2.02-0.87.el7_9.11.x86_64.rpm
grub2-efi-x64-2.02-0.87.el7_9.11.x86_64.rpm
grub2-pc-2.02-0.87.el7_9.11.x86_64.rpm
grub2-tools-2.02-0.87.el7_9.11.x86_64.rpm
grub2-tools-extra-2.02-0.87.el7_9.11.x86_64.rpm
grub2-tools-minimal-2.02-0.87.el7_9.11.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
noarch:
grub2-efi-aa64-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-ppc-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-ppc64-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-ppc64le-modules-2.02-0.87.el7_9.11.noarch.rpm
x86_64:
grub2-debuginfo-2.02-0.87.el7_9.11.x86_64.rpm
grub2-efi-ia32-cdboot-2.02-0.87.el7_9.11.x86_64.rpm
grub2-efi-x64-cdboot-2.02-0.87.el7_9.11.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source:
grub2-2.02-0.87.el7_9.11.src.rpm
noarch:
grub2-common-2.02-0.87.el7_9.11.noarch.rpm
grub2-efi-ia32-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-efi-x64-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-pc-modules-2.02-0.87.el7_9.11.noarch.rpm
x86_64:
grub2-2.02-0.87.el7_9.11.x86_64.rpm
grub2-debuginfo-2.02-0.87.el7_9.11.x86_64.rpm
grub2-efi-ia32-2.02-0.87.el7_9.11.x86_64.rpm
grub2-efi-x64-2.02-0.87.el7_9.11.x86_64.rpm
grub2-pc-2.02-0.87.el7_9.11.x86_64.rpm
grub2-tools-2.02-0.87.el7_9.11.x86_64.rpm
grub2-tools-extra-2.02-0.87.el7_9.11.x86_64.rpm
grub2-tools-minimal-2.02-0.87.el7_9.11.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
noarch:
grub2-efi-aa64-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-ppc-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-ppc64-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-ppc64le-modules-2.02-0.87.el7_9.11.noarch.rpm
x86_64:
grub2-debuginfo-2.02-0.87.el7_9.11.x86_64.rpm
grub2-efi-ia32-cdboot-2.02-0.87.el7_9.11.x86_64.rpm
grub2-efi-x64-cdboot-2.02-0.87.el7_9.11.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source:
grub2-2.02-0.87.el7_9.11.src.rpm
noarch:
grub2-common-2.02-0.87.el7_9.11.noarch.rpm
grub2-efi-ia32-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-efi-x64-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-pc-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-ppc64-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-ppc64le-modules-2.02-0.87.el7_9.11.noarch.rpm
ppc64:
grub2-2.02-0.87.el7_9.11.ppc64.rpm
grub2-debuginfo-2.02-0.87.el7_9.11.ppc64.rpm
grub2-ppc64-2.02-0.87.el7_9.11.ppc64.rpm
grub2-tools-2.02-0.87.el7_9.11.ppc64.rpm
grub2-tools-extra-2.02-0.87.el7_9.11.ppc64.rpm
grub2-tools-minimal-2.02-0.87.el7_9.11.ppc64.rpm
ppc64le:
grub2-2.02-0.87.el7_9.11.ppc64le.rpm
grub2-debuginfo-2.02-0.87.el7_9.11.ppc64le.rpm
grub2-ppc64le-2.02-0.87.el7_9.11.ppc64le.rpm
grub2-tools-2.02-0.87.el7_9.11.ppc64le.rpm
grub2-tools-extra-2.02-0.87.el7_9.11.ppc64le.rpm
grub2-tools-minimal-2.02-0.87.el7_9.11.ppc64le.rpm
x86_64:
grub2-2.02-0.87.el7_9.11.x86_64.rpm
grub2-debuginfo-2.02-0.87.el7_9.11.x86_64.rpm
grub2-efi-ia32-2.02-0.87.el7_9.11.x86_64.rpm
grub2-efi-x64-2.02-0.87.el7_9.11.x86_64.rpm
grub2-pc-2.02-0.87.el7_9.11.x86_64.rpm
grub2-tools-2.02-0.87.el7_9.11.x86_64.rpm
grub2-tools-extra-2.02-0.87.el7_9.11.x86_64.rpm
grub2-tools-minimal-2.02-0.87.el7_9.11.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
noarch:
grub2-efi-aa64-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-efi-ia32-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-efi-x64-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-pc-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-ppc-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-ppc64-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-ppc64le-modules-2.02-0.87.el7_9.11.noarch.rpm
x86_64:
grub2-debuginfo-2.02-0.87.el7_9.11.x86_64.rpm
grub2-efi-ia32-cdboot-2.02-0.87.el7_9.11.x86_64.rpm
grub2-efi-x64-cdboot-2.02-0.87.el7_9.11.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
grub2-2.02-0.87.el7_9.11.src.rpm
noarch:
grub2-common-2.02-0.87.el7_9.11.noarch.rpm
grub2-efi-ia32-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-efi-x64-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-pc-modules-2.02-0.87.el7_9.11.noarch.rpm
x86_64:
grub2-2.02-0.87.el7_9.11.x86_64.rpm
grub2-debuginfo-2.02-0.87.el7_9.11.x86_64.rpm
grub2-efi-ia32-2.02-0.87.el7_9.11.x86_64.rpm
grub2-efi-x64-2.02-0.87.el7_9.11.x86_64.rpm
grub2-pc-2.02-0.87.el7_9.11.x86_64.rpm
grub2-tools-2.02-0.87.el7_9.11.x86_64.rpm
grub2-tools-extra-2.02-0.87.el7_9.11.x86_64.rpm
grub2-tools-minimal-2.02-0.87.el7_9.11.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
noarch:
grub2-efi-aa64-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-ppc-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-ppc64-modules-2.02-0.87.el7_9.11.noarch.rpm
grub2-ppc64le-modules-2.02-0.87.el7_9.11.noarch.rpm
x86_64:
grub2-debuginfo-2.02-0.87.el7_9.11.x86_64.rpm
grub2-efi-ia32-cdboot-2.02-0.87.el7_9.11.x86_64.rpm
grub2-efi-x64-cdboot-2.02-0.87.el7_9.11.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-2022-28733
https://access.redhat.com/security/updates/classification/#important
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.
