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Red Hat Enterprise Linux 8.2 Advisory RHSA-2021-4859 Critical kpatch Issue

red hat
Calendar Grey November 30, 2021
Dist Redhat Esm H88
Critical security notice for Red Hat Linux 8.2 related to kernel vulnerabilities. Information on the update is included.
An update is now available for Red Hat Enterprise Linux 8.2 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

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: use-after-free in drivers/infiniband/core/ucma.c ctx use-after-free (CVE-2020-36385)
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 issue Red Hat kernel Important kpatch-patch loadable module

References

https://access.redhat.com/security/cve/CVE-2020-36385 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux BaseOS EUS (v. 8.2):
Source: kpatch-patch-4_18_0-193_37_1-1-11.el8_2.src.rpm kpatch-patch-4_18_0-193_40_1-1-11.el8_2.src.rpm kpatch-patch-4_18_0-193_41_1-1-11.el8_2.src.rpm kpatch-patch-4_18_0-193_46_1-1-8.el8_2.src.rpm kpatch-patch-4_18_0-193_47_1-1-8.el8_2.src.rpm kpatch-patch-4_18_0-193_51_1-1-5.el8_2.src.rpm kpatch-patch-4_18_0-193_56_1-1-4.el8_2.src.rpm kpatch-patch-4_18_0-193_60_2-1-3.el8_2.src.rpm kpatch-patch-4_18_0-193_64_1-1-2.el8_2.src.rpm kpatch-patch-4_18_0-193_65_2-1-1.el8_2.src.rpm kpatch-patch-4_18_0-193_68_1-1-1.el8_2.src.rpm
ppc64le: kpatch-patch-4_18_0-193_37_1-1-11.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_37_1-debuginfo-1-11.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_37_1-debugsource-1-11.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_40_1-1-11.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_40_1-debuginfo-1-11.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_40_1-debugsource-1-11.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_41_1-1-11.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_41_1-debuginfo-1-11.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_41_1-debugsource-1-11.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_46_1-1-8.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_46_1-debuginfo-1-8.el8_2.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:4859-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4859
Issue date: 2021-11-30

Topic

An update is now available for Red Hat Enterprise Linux 8.2 Extended UpdateSupport.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 issue Red Hat kernel Important kpatch-patch loadable module

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS EUS (v. 8.2) - ppc64le, x86_64

Bugs Fixed

1974319 - CVE-2020-36385 kernel: use-after-free in drivers/infiniband/core/ucma.c ctx use-after-free

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