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Red Hat Enterprise Linux 9: Important Kpatch-Patch Update RHSA-2022-5214-01

red hat
Calendar Grey June 28, 2022
Dist Redhat Esm H88
A crucial kpatch-patch update for Red Hat Enterprise Linux 9 addresses serious kernel vulnerabilities that could allow unauthorized access and exploitation
An update for kpatch-patch is now available for Red Hat Enterprise Linux 9

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: Small table perturb size in the TCP source port generation algorithm can lead to information leak (CVE-2022-1012)
* kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root (CVE-2022-1966)
* kernel: buffer overflow in IPsec ESP transformation code (CVE-2022-27666)
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 information leak privilege escalation Red Hat Enterprise Linux important update kpatch-patch

References

https://access.redhat.com/security/cve/CVE-2022-1012 https://access.redhat.com/security/cve/CVE-2022-1966 https://access.redhat.com/security/cve/CVE-2022-27666 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux BaseOS (v. 9):
Source: kpatch-patch-5_14_0-70_13_1-1-1.el9_0.src.rpm
ppc64le: kpatch-patch-5_14_0-70_13_1-1-1.el9_0.ppc64le.rpm kpatch-patch-5_14_0-70_13_1-debuginfo-1-1.el9_0.ppc64le.rpm kpatch-patch-5_14_0-70_13_1-debugsource-1-1.el9_0.ppc64le.rpm
x86_64: kpatch-patch-5_14_0-70_13_1-1-1.el9_0.x86_64.rpm kpatch-patch-5_14_0-70_13_1-debuginfo-1-1.el9_0.x86_64.rpm kpatch-patch-5_14_0-70_13_1-debugsource-1-1.el9_0.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-2022:5214-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:5214
Issue date: 2022-06-28

Topic

An update for kpatch-patch is now available for Red Hat Enterprise Linux 9.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 information leak privilege escalation Red Hat Enterprise Linux important update kpatch-patch

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS (v. 9) - ppc64le, x86_64

Bugs Fixed

2061633 - CVE-2022-27666 kernel: buffer overflow in IPsec ESP transformation code

2064604 - CVE-2022-1012 kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak

2092427 - CVE-2022-1966 kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root

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