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Red Hat: RHSA-2022:0592-01 Important: Kpatch Patch Privilege Escalation

red hat
Calendar Grey February 22, 2022
Dist Redhat Esm H88
OpenSUSE announces a critical zypper-update release targeting several vulnerabilities with a risk of unauthorized access escalation.
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 eventpoll.c may lead to escalation of privilege (CVE-2020-0466)
* kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)
* kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155)
* kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330)
* kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942)
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 Red Hat privilege escalation exploit important kernel kpatch-patch

References

https://access.redhat.com/security/cve/CVE-2020-0466 https://access.redhat.com/security/cve/CVE-2021-0920 https://access.redhat.com/security/cve/CVE-2021-4155 https://access.redhat.com/security/cve/CVE-2022-0330 https://access.redhat.com/security/cve/CVE-2022-22942 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Server (v. 7):
Source: kpatch-patch-3_10_0-1160_21_1-1-9.el7.src.rpm kpatch-patch-3_10_0-1160_24_1-1-7.el7.src.rpm kpatch-patch-3_10_0-1160_25_1-1-7.el7.src.rpm kpatch-patch-3_10_0-1160_31_1-1-6.el7.src.rpm kpatch-patch-3_10_0-1160_36_2-1-5.el7.src.rpm kpatch-patch-3_10_0-1160_41_1-1-4.el7.src.rpm kpatch-patch-3_10_0-1160_42_2-1-3.el7.src.rpm kpatch-patch-3_10_0-1160_45_1-1-2.el7.src.rpm kpatch-patch-3_10_0-1160_49_1-1-1.el7.src.rpm kpatch-patch-3_10_0-1160_53_1-1-1.el7.src.rpm
ppc64le: kpatch-patch-3_10_0-1160_21_1-1-9.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_21_1-debuginfo-1-9.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_24_1-1-7.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_24_1-debuginfo-1-7.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_25_1-1-7.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_25_1-debuginfo-1-7.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_31_1-1-6.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_31_1-debuginfo-1-6.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_36_2-1-5.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_36_2-debuginfo-1-5.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_41_1-1-4.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_41_1-debuginfo-1-4.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_42_2-1-3.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_42_2-debuginfo-1-3.el7.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:0592-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:0592
Issue date: 2022-02-22

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 Red Hat privilege escalation exploit important kernel kpatch-patch

Relevant Releases Architectures

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

Bugs Fixed

1920480 - CVE-2020-0466 kernel: use after free in eventpoll.c may lead to escalation of privilege

2031930 - CVE-2021-0920 kernel: Use After Free in unix_gc() which could result in a local privilege escalation

2034813 - CVE-2021-4155 kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL

2042404 - CVE-2022-0330 kernel: possible privileges escalation due to missing TLB flush

2044809 - CVE-2022-22942 kernel: failing usercopy allows for use-after-free exploitation

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