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RedHat: RHSA-2020-4331-01 Crucial Kpatch Security Fix - Major Risk

red hat
Calendar Grey October 26, 2020
Dist Redhat Esm H88
The advisory from Red Hat, RHSA-2020-4332-01, details critical security ramifications associated with the kpatch patch and provides resolutions for identified vulnerabilities.
An update is now available for Red Hat Enterprise Linux 8

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: metadata validator in XFS may cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt (CVE-2020-14385)
* kernel: memory corruption in net/packet/af_packet.c leads to elevation of privilege (CVE-2020-14386)
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 memory corruption important kernel fix red hat enterprise elevation of privilege kpatch

References

https://access.redhat.com/security/cve/CVE-2020-14385 https://access.redhat.com/security/cve/CVE-2020-14386 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: kpatch-patch-4_18_0-193-1-7.el8.src.rpm kpatch-patch-4_18_0-193_13_2-1-2.el8_2.src.rpm kpatch-patch-4_18_0-193_14_3-1-2.el8_2.src.rpm kpatch-patch-4_18_0-193_19_1-1-2.el8_2.src.rpm kpatch-patch-4_18_0-193_1_2-1-5.el8_2.src.rpm kpatch-patch-4_18_0-193_6_3-1-4.el8_2.src.rpm
ppc64le: kpatch-patch-4_18_0-193-1-7.el8.ppc64le.rpm kpatch-patch-4_18_0-193-debuginfo-1-7.el8.ppc64le.rpm kpatch-patch-4_18_0-193-debugsource-1-7.el8.ppc64le.rpm kpatch-patch-4_18_0-193_13_2-1-2.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_13_2-debuginfo-1-2.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_13_2-debugsource-1-2.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_14_3-1-2.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_14_3-debuginfo-1-2.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_14_3-debugsource-1-2.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_19_1-1-2.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_19_1-debuginfo-1-2.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_19_1-debugsource-1-2.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_1_2-1-5.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_1_2-debuginfo-1-5.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_1_2-debugsource-1-5.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_6_3-1-4.el8_2.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:4331-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4331
Issue date: 2020-10-26

Topic

An update is now available for Red Hat Enterprise Linux 8.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 memory corruption important kernel fix red hat enterprise elevation of privilege kpatch

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS (v. 8) - ppc64le, x86_64

Bugs Fixed

1874800 - CVE-2020-14385 kernel: metadata validator in XFS may cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt

1875699 - CVE-2020-14386 kernel: memory corruption in net/packet/af_packet.c leads to elevation of privilege

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