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Red Hat Enterprise Linux 7.6 RHSA-2022:2186-01 Important Kernel Fix

red hat
Calendar Grey May 11, 2022
Dist Redhat Esm H88
Crucial kernel patch and vulnerability resolution for Red Hat Enterprise Linux 7.6 tackles severe concerns impacting the platform.
An update for kernel is now available for Red Hat Enterprise Linux 7.6 Advanced Update Support, Red Hat Enterprise Linux 7.6 Telco Extended Update Support, and Red Hat Enterprise L...

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: use-after-free in RDMA listen() (CVE-2021-4028)
* kernel: cgroups v1 release_agent feature may allow privilege escalation (CVE-2022-0492)
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):
* Extend /sys/devices/system/cpu/smt/* interface to all architectures [7.6.z] (BZ#2060991)

Topics%20covered

Topics Covered

security advisory security issue privilege escalation bug fix important kernel Red Hat Enterprise

References

https://access.redhat.com/security/cve/CVE-2021-4028 https://access.redhat.com/security/cve/CVE-2022-0492 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Server AUS (v. 7.6):
Source: kernel-3.10.0-957.94.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-957.94.1.el7.noarch.rpm kernel-doc-3.10.0-957.94.1.el7.noarch.rpm
x86_64: bpftool-3.10.0-957.94.1.el7.x86_64.rpm kernel-3.10.0-957.94.1.el7.x86_64.rpm kernel-debug-3.10.0-957.94.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.94.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.94.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.94.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.94.1.el7.x86_64.rpm kernel-devel-3.10.0-957.94.1.el7.x86_64.rpm kernel-headers-3.10.0-957.94.1.el7.x86_64.rpm kernel-tools-3.10.0-957.94.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.94.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.94.1.el7.x86_64.rpm perf-3.10.0-957.94.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.94.1.el7.x86_64.rpm python-perf-3.10.0-957.94.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.94.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server E4S (v. 7.6):
Source: kernel-3.10.0-957.94.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-957.94.1.el7.noarch.rpm kernel-doc-3.10.0-957.94.1.el7.noarch.rpm
ppc64le: kernel-3.10.0-957.94.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-957.94.1.el7.ppc64le.rpm kernel-debug-3.10.0-957.94.1.el7.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:2186-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:2186
Issue date: 2022-05-11

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.6Advanced Update Support, Red Hat Enterprise Linux 7.6 Telco Extended UpdateSupport, and Red Hat Enterprise Linux 7.6 Update Services for SAPSolutions.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 privilege escalation bug fix important kernel Red Hat Enterprise

Relevant Releases Architectures

Red Hat Enterprise Linux Server AUS (v. 7.6) - noarch, x86_64

Red Hat Enterprise Linux Server E4S (v. 7.6) - noarch, ppc64le, x86_64

Red Hat Enterprise Linux Server Optional AUS (v. 7.6) - x86_64

Red Hat Enterprise Linux Server Optional E4S (v. 7.6) - ppc64le, x86_64

Red Hat Enterprise Linux Server Optional TUS (v. 7.6) - x86_64

Red Hat Enterprise Linux Server TUS (v. 7.6) - noarch, x86_64

Bugs Fixed

2027201 - CVE-2021-4028 kernel: use-after-free in RDMA listen()

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

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