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Red Hat Enterprise Linux 7.6 RHSA-2022-7173-01 Important Kernel Patch

red hat
Calendar Grey October 25, 2022
Dist Redhat Esm H88
A crucial security upgrade for kpatch-patch has just been released for Red Hat Enterprise Linux, addressing significant vulnerabilities.
An update for kpatch-patch is now available for Red Hat Enterprise Linux 7.6 Update Services for SAP Solutions

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: use-after-free in route4_change() in net/sched/cls_route.c (CVE-2021-3715)
* 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.

Topics%20covered

Topics Covered

security advisory privilege escalation kernel patch important red hat enterprise use-after-free kpatch patch

References

https://access.redhat.com/security/cve/CVE-2021-3715 https://access.redhat.com/security/cve/CVE-2022-2588 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Server E4S (v. 7.6):
Source: kpatch-patch-3_10_0-957_84_1-1-6.el7.src.rpm kpatch-patch-3_10_0-957_92_1-1-3.el7.src.rpm kpatch-patch-3_10_0-957_94_1-1-2.el7.src.rpm kpatch-patch-3_10_0-957_95_1-1-1.el7.src.rpm kpatch-patch-3_10_0-957_97_1-1-1.el7.src.rpm
ppc64le: kpatch-patch-3_10_0-957_84_1-1-6.el7.ppc64le.rpm kpatch-patch-3_10_0-957_84_1-debuginfo-1-6.el7.ppc64le.rpm kpatch-patch-3_10_0-957_92_1-1-3.el7.ppc64le.rpm kpatch-patch-3_10_0-957_92_1-debuginfo-1-3.el7.ppc64le.rpm kpatch-patch-3_10_0-957_94_1-1-2.el7.ppc64le.rpm kpatch-patch-3_10_0-957_94_1-debuginfo-1-2.el7.ppc64le.rpm kpatch-patch-3_10_0-957_95_1-1-1.el7.ppc64le.rpm kpatch-patch-3_10_0-957_95_1-debuginfo-1-1.el7.ppc64le.rpm kpatch-patch-3_10_0-957_97_1-1-1.el7.ppc64le.rpm kpatch-patch-3_10_0-957_97_1-debuginfo-1-1.el7.ppc64le.rpm
x86_64: kpatch-patch-3_10_0-957_84_1-1-6.el7.x86_64.rpm kpatch-patch-3_10_0-957_84_1-debuginfo-1-6.el7.x86_64.rpm kpatch-patch-3_10_0-957_92_1-1-3.el7.x86_64.rpm kpatch-patch-3_10_0-957_92_1-debuginfo-1-3.el7.x86_64.rpm kpatch-patch-3_10_0-957_94_1-1-2.el7.x86_64.rpm kpatch-patch-3_10_0-957_94_1-debuginfo-1-2.el7.x86_64.rpm kpatch-patch-3_10_0-957_95_1-1-1.el7.x86_64.rpm kpatch-patch-3_10_0-957_95_1-debuginfo-1-1.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:7173-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:7173
Issue date: 2022-10-25

Topic

An update for kpatch-patch is now available for Red Hat Enterprise Linux7.6 Update Services for SAP Solutions.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 important red hat enterprise use-after-free kpatch patch

Relevant Releases Architectures

Red Hat Enterprise Linux Server E4S (v. 7.6) - ppc64le, x86_64

Bugs Fixed

1993988 - CVE-2021-3715 kernel: use-after-free in route4_change() in net/sched/cls_route.c

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

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