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Red Hat: RHSA-2022-5640 Critical Update for Kernel KVM Improvements

red hat
Calendar Grey July 27, 2022
Dist Redhat Esm H88
This crucial kernel enhancement for Fedora addresses a major virtualization bug that necessitates a system restart to fully implement.
An update for kernel is now available for Red Hat Enterprise Linux 6 Extended Lifecycle 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: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)
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.

Topics%20covered

Topics Covered

security advisory Red Hat kernel update important fix KVM issue

References

https://access.redhat.com/security/cve/CVE-2021-22543 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Server (v. 6 ELS):
Source: kernel-2.6.32-754.48.1.el6.src.rpm
i386: kernel-2.6.32-754.48.1.el6.i686.rpm kernel-debug-2.6.32-754.48.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.48.1.el6.i686.rpm kernel-debug-devel-2.6.32-754.48.1.el6.i686.rpm kernel-debuginfo-2.6.32-754.48.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.48.1.el6.i686.rpm kernel-devel-2.6.32-754.48.1.el6.i686.rpm kernel-headers-2.6.32-754.48.1.el6.i686.rpm perf-2.6.32-754.48.1.el6.i686.rpm perf-debuginfo-2.6.32-754.48.1.el6.i686.rpm python-perf-debuginfo-2.6.32-754.48.1.el6.i686.rpm
noarch: kernel-abi-whitelists-2.6.32-754.48.1.el6.noarch.rpm kernel-doc-2.6.32-754.48.1.el6.noarch.rpm kernel-firmware-2.6.32-754.48.1.el6.noarch.rpm
s390x: kernel-2.6.32-754.48.1.el6.s390x.rpm kernel-debug-2.6.32-754.48.1.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-754.48.1.el6.s390x.rpm kernel-debug-devel-2.6.32-754.48.1.el6.s390x.rpm kernel-debuginfo-2.6.32-754.48.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-754.48.1.el6.s390x.rpm kernel-devel-2.6.32-754.48.1.el6.s390x.rpm kernel-headers-2.6.32-754.48.1.el6.s390x.rpm kernel-kdump-2.6.32-754.48.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-754.48.1.el6.s390x.rpm kernel-kdump-devel-2.6.32-754.48.1.el6.s390x.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:5640-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:5640
Issue date: 2022-07-19

Topic

An update for kernel is now available for Red Hat Enterprise Linux 6Extended Lifecycle 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 important fix KVM issue

Relevant Releases Architectures

Red Hat Enterprise Linux Server (v. 6 ELS) - i386, noarch, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6 ELS) - i386, s390x, x86_64

Bugs Fixed

1965461 - CVE-2021-22543 kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks

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