Red Hat 8929 Published by

A kpatch-patch security update has been released for Red Hat Enterprise Linux 7.7.

[RHSA-2023:4023-01] Important: kpatch-patch security update

Red Hat Security Advisory

Synopsis: Important: kpatch-patch security update
Advisory ID: RHSA-2023:4023-01
Product: Red Hat Enterprise Linux
Advisory URL:
Issue date: 2023-07-11
CVE Names: CVE-2022-2588

1. Summary:

An update for kpatch-patch is now available for Red Hat Enterprise Linux
7.7 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Server E4S (v. 7.7) - ppc64le, x86_64

3. Description:

The kpatch management tool provides a kernel patching infrastructure which
allows you to patch a running kernel without rebooting or restarting any

Security Fix(es):

* kernel: 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.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

5. Bugs fixed (

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

6. Package List:

Red Hat Enterprise Linux Server E4S (v. 7.7):




These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from

7. References:

8. Contact:

The Red Hat security contact is []. More contact
details at

Copyright 2023 Red Hat, Inc.