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Red Hat Enterprise Linux 9.0 RHSA-2022:9082-01 Important: Kpatch Patch

red hat
Calendar Grey December 15, 2022
Dist Redhat Esm H88
Red Hat's advisory reveals an important kpatch-patch update that resolves critical kernel issues, improving system security.
An update for kpatch-patch is now available for Red Hat Enterprise Linux 9.0 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: KVM: cmpxchg_gpte can write to pfns outside the userspace region (CVE-2022-1158)
* kernel: openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size() (CVE-2022-2639)
* kernel: watch queue race condition can lead to privilege escalation (CVE-2022-2959)
* kernel: nfsd buffer overflow by RPC message over TCP with garbage data (CVE-2022-43945)
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 buffer overflow privilege escalation Red Hat Enterprise Linux kernel fix important update kpatch patch

References

https://access.redhat.com/security/cve/CVE-2022-1158 https://access.redhat.com/security/cve/CVE-2022-2639 https://access.redhat.com/security/cve/CVE-2022-2959 https://access.redhat.com/security/cve/CVE-2022-43945 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux BaseOS EUS (v.9.0):
Source: kpatch-patch-5_14_0-70_13_1-1-5.el9_0.src.rpm kpatch-patch-5_14_0-70_17_1-1-4.el9_0.src.rpm kpatch-patch-5_14_0-70_22_1-1-4.el9_0.src.rpm kpatch-patch-5_14_0-70_26_1-1-3.el9_0.src.rpm kpatch-patch-5_14_0-70_30_1-1-1.el9_0.src.rpm
ppc64le: kpatch-patch-5_14_0-70_13_1-1-5.el9_0.ppc64le.rpm kpatch-patch-5_14_0-70_13_1-debuginfo-1-5.el9_0.ppc64le.rpm kpatch-patch-5_14_0-70_13_1-debugsource-1-5.el9_0.ppc64le.rpm kpatch-patch-5_14_0-70_17_1-1-4.el9_0.ppc64le.rpm kpatch-patch-5_14_0-70_17_1-debuginfo-1-4.el9_0.ppc64le.rpm kpatch-patch-5_14_0-70_17_1-debugsource-1-4.el9_0.ppc64le.rpm kpatch-patch-5_14_0-70_22_1-1-4.el9_0.ppc64le.rpm kpatch-patch-5_14_0-70_22_1-debuginfo-1-4.el9_0.ppc64le.rpm kpatch-patch-5_14_0-70_22_1-debugsource-1-4.el9_0.ppc64le.rpm kpatch-patch-5_14_0-70_26_1-1-3.el9_0.ppc64le.rpm kpatch-patch-5_14_0-70_26_1-debuginfo-1-3.el9_0.ppc64le.rpm kpatch-patch-5_14_0-70_26_1-debugsource-1-3.el9_0.ppc64le.rpm kpatch-patch-5_14_0-70_30_1-1-1.el9_0.ppc64le.rpm kpatch-patch-5_14_0-70_30_1-debuginfo-1-1.el9_0.ppc64le.rpm kpatch-patch-5_14_0-70_30_1-debugsource-1-1.el9_0.ppc64le.rpm
x86_64: kpatch-patch-5_14_0-70_13_1-1-5.el9_0.x86_64.rpm kpatch-patch-5_14_0-70_13_1-debuginfo-1-5.el9_0.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:9082-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:9082
Issue date: 2022-12-15

Topic

An update for kpatch-patch is now available for Red Hat Enterprise Linux9.0 Extended Update Support.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 buffer overflow privilege escalation Red Hat Enterprise Linux kernel fix important update kpatch patch

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS EUS (v.9.0) - ppc64le, x86_64

Bugs Fixed

2069793 - CVE-2022-1158 kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region

2084479 - CVE-2022-2639 kernel: openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size()

2103681 - CVE-2022-2959 kernel: watch queue race condition can lead to privilege escalation

2141752 - CVE-2022-43945 kernel: nfsd buffer overflow by RPC message over TCP with garbage data

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