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Red Hat Enterprise Linux 7: RHSA-2022-7344-01 Critical Kpatch Escalation

red hat
Calendar Grey November 2, 2022
Dist Redhat Esm H88
A critical security enhancement for kpatch-patch resolves a privilege escalation vulnerability affecting Red Hat Enterprise Linux 7.
An update for kpatch-patch is now available for Red Hat Enterprise Linux 7

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):
* a use-after-free in cls_route filter implementation may lead to privilege escalation (CVE-2022-2588)
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 kernel patch Red Hat Enterprise important update kpatch-patch

References

https://access.redhat.com/security/cve/CVE-2022-2588 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Server (v. 7):
Source: kpatch-patch-3_10_0-1160_62_1-1-3.el7.src.rpm kpatch-patch-3_10_0-1160_66_1-1-2.el7.src.rpm kpatch-patch-3_10_0-1160_71_1-1-1.el7.src.rpm kpatch-patch-3_10_0-1160_76_1-1-1.el7.src.rpm
ppc64le: kpatch-patch-3_10_0-1160_62_1-1-3.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_62_1-debuginfo-1-3.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_66_1-1-2.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_66_1-debuginfo-1-2.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_71_1-1-1.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_71_1-debuginfo-1-1.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_76_1-1-1.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_76_1-debuginfo-1-1.el7.ppc64le.rpm
x86_64: kpatch-patch-3_10_0-1160_62_1-1-3.el7.x86_64.rpm kpatch-patch-3_10_0-1160_62_1-debuginfo-1-3.el7.x86_64.rpm kpatch-patch-3_10_0-1160_66_1-1-2.el7.x86_64.rpm kpatch-patch-3_10_0-1160_66_1-debuginfo-1-2.el7.x86_64.rpm kpatch-patch-3_10_0-1160_71_1-1-1.el7.x86_64.rpm kpatch-patch-3_10_0-1160_71_1-debuginfo-1-1.el7.x86_64.rpm kpatch-patch-3_10_0-1160_76_1-1-1.el7.x86_64.rpm kpatch-patch-3_10_0-1160_76_1-debuginfo-1-1.el7.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-2022:7344-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:7344
Issue date: 2022-11-02

Topic

An update for kpatch-patch is now available for Red Hat Enterprise Linux 7.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 kernel patch Red Hat Enterprise important update kpatch-patch

Relevant Releases Architectures

Red Hat Enterprise Linux Server (v. 7) - ppc64le, x86_64

Bugs Fixed

2114849 - CVE-2022-2588 kernel: a use-after-free in cls_route filter implementation may lead to privilege escalation

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