An update is now available for Red Hat Enterprise Linux 8.1 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score,

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====================================================================                   Red Hat Security Advisory

Synopsis:          Important: kpatch-patch security update
Advisory ID:       RHSA-2021:1173-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:1173
Issue date:        2021-04-13
CVE Names:         CVE-2021-27364 CVE-2021-27365 
====================================================================
1. Summary:

An update is now available for Red Hat Enterprise Linux 8.1 Extended Update
Support.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux BaseOS EUS (v. 8.1) - ppc64le, x86_64

3. Description:

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: out-of-bounds read in libiscsi module (CVE-2021-27364)

* kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365)

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.

4. 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

5. Bugs fixed (https://bugzilla.redhat.com/):

1930078 - CVE-2021-27365 kernel: heap buffer overflow in the iSCSI subsystem
1930080 - CVE-2021-27364 kernel: out-of-bounds read in libiscsi module

6. Package List:

Red Hat Enterprise Linux BaseOS EUS (v. 8.1):

Source:
kpatch-patch-4_18_0-147_13_2-1-9.el8_1.src.rpm
kpatch-patch-4_18_0-147_20_1-1-8.el8_1.src.rpm
kpatch-patch-4_18_0-147_24_2-1-6.el8_1.src.rpm
kpatch-patch-4_18_0-147_27_1-1-6.el8_1.src.rpm
kpatch-patch-4_18_0-147_32_1-1-4.el8_1.src.rpm
kpatch-patch-4_18_0-147_34_1-1-4.el8_1.src.rpm
kpatch-patch-4_18_0-147_38_1-1-3.el8_1.src.rpm
kpatch-patch-4_18_0-147_43_1-1-1.el8_1.src.rpm

ppc64le:
kpatch-patch-4_18_0-147_13_2-1-9.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_13_2-debuginfo-1-9.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_13_2-debugsource-1-9.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_20_1-1-8.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_20_1-debuginfo-1-8.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_20_1-debugsource-1-8.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_24_2-1-6.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_24_2-debuginfo-1-6.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_24_2-debugsource-1-6.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_27_1-1-6.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_27_1-debuginfo-1-6.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_27_1-debugsource-1-6.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_32_1-1-4.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_32_1-debuginfo-1-4.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_32_1-debugsource-1-4.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_34_1-1-4.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_34_1-debuginfo-1-4.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_34_1-debugsource-1-4.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_38_1-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_38_1-debuginfo-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_38_1-debugsource-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_43_1-1-1.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_43_1-debuginfo-1-1.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_43_1-debugsource-1-1.el8_1.ppc64le.rpm

x86_64:
kpatch-patch-4_18_0-147_13_2-1-9.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_13_2-debuginfo-1-9.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_13_2-debugsource-1-9.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_20_1-1-8.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_20_1-debuginfo-1-8.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_20_1-debugsource-1-8.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_24_2-1-6.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_24_2-debuginfo-1-6.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_24_2-debugsource-1-6.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_27_1-1-6.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_27_1-debuginfo-1-6.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_27_1-debugsource-1-6.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_32_1-1-4.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_32_1-debuginfo-1-4.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_32_1-debugsource-1-4.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_34_1-1-4.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_34_1-debuginfo-1-4.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_34_1-debugsource-1-4.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_38_1-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_38_1-debuginfo-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_38_1-debugsource-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_43_1-1-1.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_43_1-debuginfo-1-1.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_43_1-debugsource-1-1.el8_1.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2021-27364
https://access.redhat.com/security/cve/CVE-2021-27365
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
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