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Red Hat Enterprise Linux 8.4 RHSA-2022:8768-01 Important: Kpatch-Patch DoS

red hat
Calendar Grey December 3, 2022
Dist Redhat Esm H88
The recent critical kpatch-patch security update from Red Hat tackles a major vulnerability within Red Hat Enterprise Linux environments.
An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.4 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: openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size() (CVE-2022-2639)
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 denial of service Red Hat Enterprise Linux important kernel openvswitch kpatch-patch

References

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

Package List

Red Hat Enterprise Linux BaseOS EUS (v.8.4):
Source: kpatch-patch-4_18_0-305_49_1-1-4.el8_4.src.rpm kpatch-patch-4_18_0-305_57_1-1-3.el8_4.src.rpm kpatch-patch-4_18_0-305_62_1-1-3.el8_4.src.rpm kpatch-patch-4_18_0-305_65_1-1-2.el8_4.src.rpm kpatch-patch-4_18_0-305_71_1-1-1.el8_4.src.rpm
ppc64le: kpatch-patch-4_18_0-305_49_1-1-4.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_49_1-debuginfo-1-4.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_49_1-debugsource-1-4.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_57_1-1-3.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_57_1-debuginfo-1-3.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_57_1-debugsource-1-3.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_62_1-1-3.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_62_1-debuginfo-1-3.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_62_1-debugsource-1-3.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_65_1-1-2.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_65_1-debuginfo-1-2.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_65_1-debugsource-1-2.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_71_1-1-1.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_71_1-debuginfo-1-1.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_71_1-debugsource-1-1.el8_4.ppc64le.rpm
x86_64: kpatch-patch-4_18_0-305_49_1-1-4.el8_4.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:8768-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:8768
Issue date: 2022-12-02

Topic

An update for kpatch-patch is now available for Red Hat Enterprise Linux8.4 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 denial of service Red Hat Enterprise Linux important kernel openvswitch kpatch-patch

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS EUS (v.8.4) - ppc64le, x86_64

Bugs Fixed

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

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