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Red Hat Security Advisory 2021-0689-01

Red Hat Security Advisory 2021-0689-01
Posted Mar 2, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0689-01 - 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. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2020-0444, CVE-2020-29661
SHA-256 | 6201a82d0790a7c15b56eca2f83705511ee46b4f53eab07dff124a7d2d5ecbe8

Red Hat Security Advisory 2021-0689-01

Change Mirror Download
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=====================================================================
Red Hat Security Advisory

Synopsis: Important: kpatch-patch security update
Advisory ID: RHSA-2021:0689-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0689
Issue date: 2021-03-02
CVE Names: CVE-2020-0444 CVE-2020-29661
=====================================================================

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: bad kfree in auditfilter.c may lead to escalation of privilege
(CVE-2020-0444)

* kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an
use-after-free (CVE-2020-29661)

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/):

1906525 - CVE-2020-29661 kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free
1920474 - CVE-2020-0444 kernel: bad kfree in auditfilter.c may lead to escalation of privilege

6. Package List:

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

Source:
kpatch-patch-4_18_0-147_13_2-1-8.el8_1.src.rpm
kpatch-patch-4_18_0-147_20_1-1-7.el8_1.src.rpm
kpatch-patch-4_18_0-147_24_2-1-5.el8_1.src.rpm
kpatch-patch-4_18_0-147_27_1-1-5.el8_1.src.rpm
kpatch-patch-4_18_0-147_32_1-1-3.el8_1.src.rpm
kpatch-patch-4_18_0-147_34_1-1-3.el8_1.src.rpm
kpatch-patch-4_18_0-147_38_1-1-2.el8_1.src.rpm
kpatch-patch-4_18_0-147_8_1-1-10.el8_1.src.rpm

ppc64le:
kpatch-patch-4_18_0-147_13_2-1-8.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_13_2-debuginfo-1-8.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_13_2-debugsource-1-8.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_20_1-1-7.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_20_1-debuginfo-1-7.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_20_1-debugsource-1-7.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_24_2-1-5.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_24_2-debuginfo-1-5.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_24_2-debugsource-1-5.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_27_1-1-5.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_27_1-debuginfo-1-5.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_27_1-debugsource-1-5.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_32_1-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_32_1-debuginfo-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_32_1-debugsource-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_34_1-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_34_1-debuginfo-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_34_1-debugsource-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_38_1-1-2.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_38_1-debuginfo-1-2.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_38_1-debugsource-1-2.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_8_1-1-10.el8_1.ppc64le.rpm

x86_64:
kpatch-patch-4_18_0-147_13_2-1-8.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_13_2-debuginfo-1-8.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_13_2-debugsource-1-8.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_20_1-1-7.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_20_1-debuginfo-1-7.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_20_1-debugsource-1-7.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_24_2-1-5.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_24_2-debuginfo-1-5.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_24_2-debugsource-1-5.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_27_1-1-5.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_27_1-debuginfo-1-5.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_27_1-debugsource-1-5.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_32_1-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_32_1-debuginfo-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_32_1-debugsource-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_34_1-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_34_1-debuginfo-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_34_1-debugsource-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_38_1-1-2.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_38_1-debuginfo-1-2.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_38_1-debugsource-1-2.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_8_1-1-10.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-2020-0444
https://access.redhat.com/security/cve/CVE-2020-29661
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2021 Red Hat, Inc.
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