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Kernel Security Update for Red Hat Enterprise Linux 8.1 RHSA-2021:1171-01

red hat
Calendar Grey April 13, 2021
Dist Redhat Esm H88
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ====================================================
An update for kernel is now available for Red Hat Enterprise Linux 8.1 Extended Update Support

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: out-of-bounds read in libiscsi module (CVE-2021-27364)
* kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365)
* kernel: iscsi: unrestricted access to sessions and handles (CVE-2021-27363)
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):
* Upstream Patch for Gracefully handle DMAR units with no supported address widthsx86/vt-d (BZ#1932201)
* RHEL8.1 Alpha - ISST-LTE:PNV:Witherspoon-DD2.3:woo: KDUMP hang during shutdown, lpfc loses connection to disks (rootdisk:nvme) (BZ#1934306)

Topics%20covered

Topics Covered

security advisory Red Hat kernel update bug fix important heap overflow session access

References

https://access.redhat.com/security/cve/CVE-2021-27363 https://access.redhat.com/security/cve/CVE-2021-27364 https://access.redhat.com/security/cve/CVE-2021-27365 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux BaseOS EUS (v. 8.1):
Source: kernel-4.18.0-147.44.1.el8_1.src.rpm
aarch64: bpftool-4.18.0-147.44.1.el8_1.aarch64.rpm bpftool-debuginfo-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-core-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-cross-headers-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-debug-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-debug-core-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-debug-debuginfo-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-debug-devel-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-debug-modules-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-debug-modules-extra-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-debuginfo-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-devel-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-headers-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-modules-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-modules-extra-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-tools-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-tools-debuginfo-4.18.0-147.44.1.el8_1.aarch64.rpm kernel-tools-libs-4.18.0-147.44.1.el8_1.aarch64.rpm perf-4.18.0-147.44.1.el8_1.aarch64.rpm perf-debuginfo-4.18.0-147.44.1.el8_1.aarch64.rpm python3-perf-4.18.0-147.44.1.el8_1.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:1171-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1171
Issue date: 2021-04-13

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.1Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat kernel update bug fix important heap overflow session access

Relevant Releases Architectures

Red Hat CodeReady Linux Builder EUS (v. 8.1) - aarch64, ppc64le, x86_64

Red Hat Enterprise Linux BaseOS EUS (v. 8.1) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

1930078 - CVE-2021-27365 kernel: heap buffer overflow in the iSCSI subsystem

1930079 - CVE-2021-27363 kernel: iscsi: unrestricted access to sessions and handles

1930080 - CVE-2021-27364 kernel: out-of-bounds read in libiscsi module

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