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Red Hat Enterprise Linux 8.4 RHSA-2022:1418-01 Important Kpatch Update

red hat
Calendar Grey April 19, 2022
Dist Redhat Esm H88
Crucial security patch released for Red Hat Enterprise Linux 8.4 to resolve various kernel vulnerabilities.
An update is now available for Red Hat Enterprise Linux 8.4 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: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)
* kernel: cgroups v1 release_agent feature may allow privilege escalation (CVE-2022-0492)
* kernel: heap out of bounds write in nf_dup_netdev.c (CVE-2022-25636)
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 privilege escalation Red Hat Enterprise Linux patch important kernel kpatch

References

https://access.redhat.com/security/cve/CVE-2021-4083 https://access.redhat.com/security/cve/CVE-2022-0492 https://access.redhat.com/security/cve/CVE-2022-25636 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux BaseOS EUS (v.8.4):
Source: kpatch-patch-4_18_0-305-1-12.el8.src.rpm kpatch-patch-4_18_0-305_10_2-1-9.el8_4.src.rpm kpatch-patch-4_18_0-305_12_1-1-8.el8_4.src.rpm kpatch-patch-4_18_0-305_17_1-1-7.el8_4.src.rpm kpatch-patch-4_18_0-305_19_1-1-7.el8_4.src.rpm kpatch-patch-4_18_0-305_25_1-1-6.el8_4.src.rpm kpatch-patch-4_18_0-305_28_1-1-4.el8_4.src.rpm kpatch-patch-4_18_0-305_30_1-1-4.el8_4.src.rpm kpatch-patch-4_18_0-305_34_2-1-2.el8_4.src.rpm kpatch-patch-4_18_0-305_3_1-1-11.el8_4.src.rpm kpatch-patch-4_18_0-305_40_1-1-1.el8_4.src.rpm kpatch-patch-4_18_0-305_40_2-1-1.el8_4.src.rpm kpatch-patch-4_18_0-305_7_1-1-10.el8_4.src.rpm
ppc64le: kpatch-patch-4_18_0-305-1-12.el8.ppc64le.rpm kpatch-patch-4_18_0-305-debuginfo-1-12.el8.ppc64le.rpm kpatch-patch-4_18_0-305-debugsource-1-12.el8.ppc64le.rpm kpatch-patch-4_18_0-305_10_2-1-9.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_10_2-debuginfo-1-9.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_10_2-debugsource-1-9.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_12_1-1-8.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_12_1-debuginfo-1-8.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_12_1-debugsource-1-8.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_17_1-1-7.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_17_1-debuginfo-1-7.el8_4.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:1418-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:1418
Issue date: 2022-04-19

Topic

An update is now available for Red Hat Enterprise Linux 8.4 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 privilege escalation Red Hat Enterprise Linux patch important kernel kpatch

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS EUS (v.8.4) - ppc64le, x86_64

Bugs Fixed

2029923 - CVE-2021-4083 kernel: fget: check that the fd still exists after getting a ref to it

2051505 - CVE-2022-0492 kernel: cgroups v1 release_agent feature may allow privilege escalation

2056830 - CVE-2022-25636 kernel: heap out of bounds write in nf_dup_netdev.c

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