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Red Hat 8 RHSA-2023-0839-01 Important: Kpatch KERNEL Issue

red hat
Calendar Grey February 21, 2023
Dist Redhat Esm H88
Essential kpatch-patch security upgrade for Red Hat Enterprise Linux classified as significant by Red Hat Product Security.
An update for kpatch-patch is now available for Red Hat Enterprise Linux 8

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: mm/mremap.c use-after-free vulnerability (CVE-2022-41222)
* 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 Red Hat Enterprise Linux important kernel issue use-after-free kpatch-patch

References

https://access.redhat.com/security/cve/CVE-2022-41222 https://access.redhat.com/security/cve/CVE-2022-43945 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: kpatch-patch-4_18_0-425_10_1-1-1.el8_7.src.rpm kpatch-patch-4_18_0-425_3_1-1-3.el8.src.rpm
ppc64le: kpatch-patch-4_18_0-425_10_1-1-1.el8_7.ppc64le.rpm kpatch-patch-4_18_0-425_10_1-debuginfo-1-1.el8_7.ppc64le.rpm kpatch-patch-4_18_0-425_10_1-debugsource-1-1.el8_7.ppc64le.rpm kpatch-patch-4_18_0-425_3_1-1-3.el8.ppc64le.rpm kpatch-patch-4_18_0-425_3_1-debuginfo-1-3.el8.ppc64le.rpm kpatch-patch-4_18_0-425_3_1-debugsource-1-3.el8.ppc64le.rpm
x86_64: kpatch-patch-4_18_0-425_10_1-1-1.el8_7.x86_64.rpm kpatch-patch-4_18_0-425_10_1-debuginfo-1-1.el8_7.x86_64.rpm kpatch-patch-4_18_0-425_10_1-debugsource-1-1.el8_7.x86_64.rpm kpatch-patch-4_18_0-425_3_1-1-3.el8.x86_64.rpm kpatch-patch-4_18_0-425_3_1-debuginfo-1-3.el8.x86_64.rpm kpatch-patch-4_18_0-425_3_1-debugsource-1-3.el8.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-2023:0839-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:0839
Issue date: 2023-02-21

Topic

An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.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 Red Hat Enterprise Linux important kernel issue use-after-free kpatch-patch

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS (v. 8) - ppc64le, x86_64

Bugs Fixed

2138818 - CVE-2022-41222 kernel: mm/mremap.c use-after-free vulnerability

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

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