-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: grub2 security and bug fix update Advisory ID: RHSA-2023:0048-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2023:0048 Issue date: 2023-01-09 CVE Names: CVE-2022-2601 CVE-2022-3775 ===================================================================== 1. Summary: An update for grub2 is now available for Red Hat Enterprise Linux 8.6 Extended Update Support. 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 EUS (v.8.6) - aarch64, noarch, ppc64le, 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. Bug Fix(es): * [RHEL8.6][SecureBoot][Denali/P10] boot process stops at grub prompt after copying the signed grub to prep partition (BZ#2108049) 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 EUS (v.8.6): Source: grub2-2.02-123.el8_6.12.src.rpm aarch64: grub2-debuginfo-2.02-123.el8_6.12.aarch64.rpm grub2-debugsource-2.02-123.el8_6.12.aarch64.rpm grub2-efi-aa64-2.02-123.el8_6.12.aarch64.rpm grub2-efi-aa64-cdboot-2.02-123.el8_6.12.aarch64.rpm grub2-tools-2.02-123.el8_6.12.aarch64.rpm grub2-tools-debuginfo-2.02-123.el8_6.12.aarch64.rpm grub2-tools-extra-2.02-123.el8_6.12.aarch64.rpm grub2-tools-extra-debuginfo-2.02-123.el8_6.12.aarch64.rpm grub2-tools-minimal-2.02-123.el8_6.12.aarch64.rpm grub2-tools-minimal-debuginfo-2.02-123.el8_6.12.aarch64.rpm noarch: grub2-common-2.02-123.el8_6.12.noarch.rpm grub2-efi-aa64-modules-2.02-123.el8_6.12.noarch.rpm grub2-efi-ia32-modules-2.02-123.el8_6.12.noarch.rpm grub2-efi-x64-modules-2.02-123.el8_6.12.noarch.rpm grub2-pc-modules-2.02-123.el8_6.12.noarch.rpm grub2-ppc64le-modules-2.02-123.el8_6.12.noarch.rpm ppc64le: grub2-debuginfo-2.02-123.el8_6.12.ppc64le.rpm grub2-debugsource-2.02-123.el8_6.12.ppc64le.rpm grub2-ppc64le-2.02-123.el8_6.12.ppc64le.rpm grub2-tools-2.02-123.el8_6.12.ppc64le.rpm grub2-tools-debuginfo-2.02-123.el8_6.12.ppc64le.rpm grub2-tools-extra-2.02-123.el8_6.12.ppc64le.rpm grub2-tools-extra-debuginfo-2.02-123.el8_6.12.ppc64le.rpm grub2-tools-minimal-2.02-123.el8_6.12.ppc64le.rpm grub2-tools-minimal-debuginfo-2.02-123.el8_6.12.ppc64le.rpm x86_64: grub2-debuginfo-2.02-123.el8_6.12.x86_64.rpm grub2-debugsource-2.02-123.el8_6.12.x86_64.rpm grub2-efi-ia32-2.02-123.el8_6.12.x86_64.rpm grub2-efi-ia32-cdboot-2.02-123.el8_6.12.x86_64.rpm grub2-efi-x64-2.02-123.el8_6.12.x86_64.rpm grub2-efi-x64-cdboot-2.02-123.el8_6.12.x86_64.rpm grub2-pc-2.02-123.el8_6.12.x86_64.rpm grub2-tools-2.02-123.el8_6.12.x86_64.rpm grub2-tools-debuginfo-2.02-123.el8_6.12.x86_64.rpm grub2-tools-efi-2.02-123.el8_6.12.x86_64.rpm grub2-tools-efi-debuginfo-2.02-123.el8_6.12.x86_64.rpm grub2-tools-extra-2.02-123.el8_6.12.x86_64.rpm grub2-tools-extra-debuginfo-2.02-123.el8_6.12.x86_64.rpm grub2-tools-minimal-2.02-123.el8_6.12.x86_64.rpm grub2-tools-minimal-debuginfo-2.02-123.el8_6.12.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 . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2023 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBY7xCD9zjgjWX9erEAQhfzA/7Ba+eaWDBSVgfND359hC383ptYeHqg4pg 4umJfzuRvYPEMV4mg62iBci5gSoIWMvFTT0somnAEtT/F5fmmIMJhJBCtin4GqMs XxiOZQVGPVySBgTQNorSiXkC2z40tBfYRuyrkDNvwCWlKuv+G7bdkZY4IKbOUKu4 dvP2ZZu+WDwB+mxR2NUjoTkreOsbJrTEysDmoZWxuN25dPuYpBwRbt+VLVMPNY0B CEs4WhJdHnLnSQCRJhUMwWQPpt2akDqvSwX/Qphz/UlFu8Cs+s8YFCs/BQxLI4ku UWJL1eTjtnb3iQMmP36fRF1GVc2YsalMDAmEwXcZsSF36t5qlJNMaHELiepSQP2v QOuMuSXqX3gFb6Vw2+uqEHZ97I5DYUnWwWV3tmVPULqitNf1dMtYG/SlHucRebNw 0h5nQxEzkSz0/5DLvAlNeMPh9+7/xKwsSacbCpBXODy3n6AW3R7YflycuqahsIRt kh+3B21g6RIr73QnJNnwlCJN6QEGEMvTGq6XJuCilOe43QjZ5D4ptY7gco7o2UQS PNBNYmhSghF3TQNyVGDqrqF36Zd8r5Q7+NIQh/aTnL+BXZtuRA4qH/XsDOrETwro 5aNXQVW/1aM3xsnbSV8OGGFCr9G65xTZR2slziC3VYNpcZ43YHFMxHifV0tCfPsG CprlG5jMKn4= =YOdv -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce