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Red Hat Enterprise Linux 8: RHSA-2021-4645-01 Important: Kernel Live Patch

red hat
Calendar Grey November 15, 2021
Dist Redhat Esm H88
Canonical unveiled a critical enhancement for Ubuntu 22.04 concerning apparmor. Prompt implementation is essential for protection.
An update 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

Summary

This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.
Security Fix(es):
* kernel: Insufficient validation of user-supplied sizes for the MSG_CRYPTO message type (CVE-2021-43267)
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 security fix kernel security Red Hat Enterprise Linux important kernel live patch kpatch-patch

References

https://access.redhat.com/security/cve/CVE-2021-43267 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: kpatch-patch-4_18_0-348-1-1.el8.src.rpm
ppc64le: kpatch-patch-4_18_0-348-1-1.el8.ppc64le.rpm kpatch-patch-4_18_0-348-debuginfo-1-1.el8.ppc64le.rpm kpatch-patch-4_18_0-348-debugsource-1-1.el8.ppc64le.rpm
x86_64: kpatch-patch-4_18_0-348-1-1.el8.x86_64.rpm kpatch-patch-4_18_0-348-debuginfo-1-1.el8.x86_64.rpm kpatch-patch-4_18_0-348-debugsource-1-1.el8.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/


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:4645-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4645
Issue date: 2021-11-15

Topic

An update is now available for Red Hat Enterprise Linux 8.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 security fix kernel security Red Hat Enterprise Linux important kernel live patch kpatch-patch

Relevant Releases Architectures

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

Bugs Fixed

2020362 - CVE-2021-43267 kernel: Insufficient validation of user-supplied sizes for the MSG_CRYPTO message type

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