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Alerts This Week
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Red Hat 8: RHSA-2020:3218-01 Moderate: Kernel ACPI Bypass Security Fix

red hat
Calendar Grey July 29, 2020
Dist Redhat Esm H88
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ====================================================
An update for kernel is now available for Red Hat Enterprise Linux 8

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

The system must be rebooted for this update to take effect.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: lockdown: bypass through ACPI write via efivar_ssdt (CVE-2019-20908)
* kernel: lockdown: bypass through ACPI write via acpi_configfs (CVE-2020-15780)
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):
* kernel: provide infrastructure to support dual-signing of the kernel (foundation to help address CVE-2020-10713) (BZ#1837433)
* [Regression] RHEL8.2 RC - [Boston/DD2.1] [RHEL8.2/kernel-4.18.0-193.el8.ppc64le] Host kernel crashes while running storage test bucket on KVM guest (iscsi) (BZ#1852048)
* RHEL8.2 - s390/mm: fix panic in gup_fast on large pud (BZ#1853336)

Topics%20covered

Topics Covered

security advisory moderate Red Hat kernel update bug fix kernel ACPI bypass

References

https://access.redhat.com/security/cve/CVE-2019-20908 https://access.redhat.com/security/cve/CVE-2020-15780 https://access.redhat.com/security/updates/classification#moderate https://access.redhat.com/security/vulnerabilities/grub2bootloader

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: kernel-4.18.0-193.14.3.el8_2.src.rpm
aarch64: bpftool-4.18.0-193.14.3.el8_2.aarch64.rpm bpftool-debuginfo-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-core-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-cross-headers-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-debug-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-debug-core-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-debug-debuginfo-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-debug-devel-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-debug-modules-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-debug-modules-extra-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-debuginfo-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-devel-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-headers-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-modules-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-modules-extra-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-tools-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-tools-debuginfo-4.18.0-193.14.3.el8_2.aarch64.rpm kernel-tools-libs-4.18.0-193.14.3.el8_2.aarch64.rpm perf-4.18.0-193.14.3.el8_2.aarch64.rpm perf-debuginfo-4.18.0-193.14.3.el8_2.aarch64.rpm python3-perf-4.18.0-193.14.3.el8_2.aarch64.rpm

Read the Full Advisory


Advisory ID: RHSA-2020:3218-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:3218
Issue date: 2020-07-29

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate Red Hat kernel update bug fix kernel ACPI bypass

Relevant Releases Architectures

Red Hat CodeReady Linux Builder (v. 8) - aarch64, ppc64le, x86_64

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

1852942 - CVE-2019-20908 kernel: lockdown: bypass through ACPI write via efivar_ssdt

1852962 - CVE-2020-15780 kernel: lockdown: bypass through ACPI write via acpi_configfs

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