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Red Hat Enterprise Linux 7.7 RHSA-2021:1028 Critical Kernel Patch

Calendar Mar 30, 2021 • User Avatar LinuxSecurity Advisories
6 - 11 min read
Redhat Large Esm H500
Topics%20covered

Topics Covered

security advisory bug fix kernel patch Red Hat Enterprise Linux threat critical update important kernel Red Hat Enterprise performance issue
An update for kernel is now available for Red Hat Enterprise Linux 7.7 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, 
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

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

Synopsis:          Important: kernel security and bug fix update
Advisory ID:       RHSA-2021:1028-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:1028
Issue date:        2021-03-30
CVE Names:         CVE-2020-14351 CVE-2020-29661 
====================================================================
1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 7.7
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 ComputeNode EUS (v. 7.7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) - x86_64
Red Hat Enterprise Linux Server EUS (v. 7.7) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 7.7) - ppc64, ppc64le, x86_64

3. Description:

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

Security Fix(es):

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

* kernel: performance counters race condition use-after-free
(CVE-2020-14351)

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.

Bug Fix(es):

* Openstack network node reports unregister_netdevice: waiting for
qr-3cec0c92-9a to become free. Usage count = 1 (BZ#1908539)

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

The system must be rebooted for this update to take effect.

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

1862849 - CVE-2020-14351 kernel: performance counters race condition use-after-free
1906525 - CVE-2020-29661 kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free

6. Package List:

Red Hat Enterprise Linux ComputeNode EUS (v. 7.7):

Source:
kernel-3.10.0-1062.46.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-1062.46.1.el7.noarch.rpm
kernel-doc-3.10.0-1062.46.1.el7.noarch.rpm

x86_64:
bpftool-3.10.0-1062.46.1.el7.x86_64.rpm
bpftool-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-debug-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-devel-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-headers-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-tools-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-1062.46.1.el7.x86_64.rpm
perf-3.10.0-1062.46.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
python-perf-3.10.0-1062.46.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7):

x86_64:
bpftool-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-1062.46.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 7.7):

Source:
kernel-3.10.0-1062.46.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-1062.46.1.el7.noarch.rpm
kernel-doc-3.10.0-1062.46.1.el7.noarch.rpm

ppc64:
bpftool-3.10.0-1062.46.1.el7.ppc64.rpm
bpftool-debuginfo-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-debug-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-debug-devel-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-devel-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-headers-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-tools-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-tools-libs-3.10.0-1062.46.1.el7.ppc64.rpm
perf-3.10.0-1062.46.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-1062.46.1.el7.ppc64.rpm
python-perf-3.10.0-1062.46.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-1062.46.1.el7.ppc64.rpm

ppc64le:
bpftool-3.10.0-1062.46.1.el7.ppc64le.rpm
bpftool-debuginfo-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-debug-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-devel-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-headers-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-tools-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-1062.46.1.el7.ppc64le.rpm
perf-3.10.0-1062.46.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-1062.46.1.el7.ppc64le.rpm
python-perf-3.10.0-1062.46.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-1062.46.1.el7.ppc64le.rpm

s390x:
bpftool-3.10.0-1062.46.1.el7.s390x.rpm
bpftool-debuginfo-3.10.0-1062.46.1.el7.s390x.rpm
kernel-3.10.0-1062.46.1.el7.s390x.rpm
kernel-debug-3.10.0-1062.46.1.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-1062.46.1.el7.s390x.rpm
kernel-debug-devel-3.10.0-1062.46.1.el7.s390x.rpm
kernel-debuginfo-3.10.0-1062.46.1.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-1062.46.1.el7.s390x.rpm
kernel-devel-3.10.0-1062.46.1.el7.s390x.rpm
kernel-headers-3.10.0-1062.46.1.el7.s390x.rpm
kernel-kdump-3.10.0-1062.46.1.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-1062.46.1.el7.s390x.rpm
kernel-kdump-devel-3.10.0-1062.46.1.el7.s390x.rpm
perf-3.10.0-1062.46.1.el7.s390x.rpm
perf-debuginfo-3.10.0-1062.46.1.el7.s390x.rpm
python-perf-3.10.0-1062.46.1.el7.s390x.rpm
python-perf-debuginfo-3.10.0-1062.46.1.el7.s390x.rpm

x86_64:
bpftool-3.10.0-1062.46.1.el7.x86_64.rpm
bpftool-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-debug-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-devel-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-headers-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-tools-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-1062.46.1.el7.x86_64.rpm
perf-3.10.0-1062.46.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
python-perf-3.10.0-1062.46.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 7.7):

ppc64:
bpftool-debuginfo-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-1062.46.1.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-1062.46.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-1062.46.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-1062.46.1.el7.ppc64.rpm

ppc64le:
bpftool-debuginfo-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-1062.46.1.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-1062.46.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-1062.46.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-1062.46.1.el7.ppc64le.rpm

x86_64:
bpftool-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-1062.46.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-1062.46.1.el7.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-2020-14351
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 . More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
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Red Hat Enterprise Linux 7.7 RHSA-2021:1028 Critical Kernel Patch

red hat
Calendar Grey March 30, 2021
Dist Redhat Esm H88
The latest update for Red Hat Enterprise Linux 7.7 tackles critical kernel vulnerabilities by implementing crucial bug resolutions aimed at improved system functionality.
An update for kernel is now available for Red Hat Enterprise Linux 7.7 Extended Update Support

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

The system must be rebooted for this update to take effect.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661)
* kernel: performance counters race condition use-after-free (CVE-2020-14351)
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.
Bug Fix(es):
* Openstack network node reports unregister_netdevice: waiting for qr-3cec0c92-9a to become free. Usage count = 1 (BZ#1908539)

Topics%20covered

Topics Covered

security advisory bug fix kernel patch Red Hat Enterprise Linux threat critical update important kernel Red Hat Enterprise performance issue

References

https://access.redhat.com/security/cve/CVE-2020-14351 https://access.redhat.com/security/cve/CVE-2020-29661 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux ComputeNode EUS (v. 7.7):
Source: kernel-3.10.0-1062.46.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-1062.46.1.el7.noarch.rpm kernel-doc-3.10.0-1062.46.1.el7.noarch.rpm
x86_64: bpftool-3.10.0-1062.46.1.el7.x86_64.rpm bpftool-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm kernel-3.10.0-1062.46.1.el7.x86_64.rpm kernel-debug-3.10.0-1062.46.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-1062.46.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1062.46.1.el7.x86_64.rpm kernel-devel-3.10.0-1062.46.1.el7.x86_64.rpm kernel-headers-3.10.0-1062.46.1.el7.x86_64.rpm kernel-tools-3.10.0-1062.46.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-1062.46.1.el7.x86_64.rpm perf-3.10.0-1062.46.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm python-perf-3.10.0-1062.46.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7):
x86_64: bpftool-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1062.46.1.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:1028-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1028
Issue date: 2021-03-30

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.7Extended Update Support.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 bug fix kernel patch Red Hat Enterprise Linux threat critical update important kernel Red Hat Enterprise performance issue

Relevant Releases Architectures

Red Hat Enterprise Linux ComputeNode EUS (v. 7.7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) - x86_64

Red Hat Enterprise Linux Server EUS (v. 7.7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 7.7) - ppc64, ppc64le, x86_64

Bugs Fixed

1862849 - CVE-2020-14351 kernel: performance counters race condition use-after-free

1906525 - CVE-2020-29661 kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free

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