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RedHat 7 RHSA-2022:1185-01 Important: Kpatch Kernel Update

red hat
Calendar Grey April 5, 2022
Dist Redhat Esm H88
A crucial kpatch-patch upgrade has just been released for Red Hat Enterprise Linux to mitigate vulnerabilities in the kernel security.
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):
* kernel: use-after-free in RDMA listen() (CVE-2021-4028)
* kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)
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 critical security fix Red Hat Enterprise Linux important kernel kpatch

References

https://access.redhat.com/security/cve/CVE-2021-4028 https://access.redhat.com/security/cve/CVE-2021-4083 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Server (v. 7):
Source: kpatch-patch-3_10_0-1160_24_1-1-8.el7.src.rpm kpatch-patch-3_10_0-1160_25_1-1-8.el7.src.rpm kpatch-patch-3_10_0-1160_31_1-1-7.el7.src.rpm kpatch-patch-3_10_0-1160_36_2-1-6.el7.src.rpm kpatch-patch-3_10_0-1160_41_1-1-5.el7.src.rpm kpatch-patch-3_10_0-1160_42_2-1-4.el7.src.rpm kpatch-patch-3_10_0-1160_45_1-1-3.el7.src.rpm kpatch-patch-3_10_0-1160_49_1-1-2.el7.src.rpm kpatch-patch-3_10_0-1160_53_1-1-2.el7.src.rpm kpatch-patch-3_10_0-1160_59_1-1-1.el7.src.rpm
ppc64le: kpatch-patch-3_10_0-1160_24_1-1-8.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_24_1-debuginfo-1-8.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_25_1-1-8.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_25_1-debuginfo-1-8.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_31_1-1-7.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_31_1-debuginfo-1-7.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_36_2-1-6.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_36_2-debuginfo-1-6.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_41_1-1-5.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_41_1-debuginfo-1-5.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_42_2-1-4.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_42_2-debuginfo-1-4.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_45_1-1-3.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_45_1-debuginfo-1-3.el7.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:1185-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:1185
Issue date: 2022-04-05

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 critical security fix Red Hat Enterprise Linux important kernel kpatch

Relevant Releases Architectures

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

Bugs Fixed

2027201 - CVE-2021-4028 kernel: use-after-free in RDMA listen()

2029923 - CVE-2021-4083 kernel: fget: check that the fd still exists after getting a ref to it

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