Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2020.0151
kernel security and bug fix update
16 January 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Red Hat Enterprise Linux WS/Desktop 7
Impact/Access: Increased Privileges -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-11599 CVE-2019-6974 CVE-2018-20856
CVE-2018-18281 CVE-2018-10853
Reference: ESB-2020.0148
ESB-2020.0068
ESB-2019.4646
ESB-2019.4616
ESB-2019.4486
ESB-2019.4193
ESB-2019.4121
ESB-2019.3997
Original Bulletin:
https://access.redhat.com/errata/RHSA-2020:0103
- --------------------------BEGIN INCLUDED TEXT--------------------
- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2020:0103-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0103
Issue date: 2020-01-14
CVE Names: CVE-2018-10853 CVE-2018-18281 CVE-2018-20856
CVE-2019-6974 CVE-2019-11599
=====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 7.4
Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update
Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP
Solutions.
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 Server AUS (v. 7.4) - noarch, x86_64
Red Hat Enterprise Linux Server E4S (v. 7.4) - noarch, ppc64le, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 7.4) - x86_64
Red Hat Enterprise Linux Server Optional E4S (v. 7.4) - ppc64le, x86_64
Red Hat Enterprise Linux Server Optional TUS (v. 7.4) - x86_64
Red Hat Enterprise Linux Server TUS (v. 7.4) - noarch, x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
Security Fix(es):
* kernel: Use-after-free in __blk_drain_queue() function in
block/blk-core.c (CVE-2018-20856)
* Kernel: KVM: potential use-after-free via kvm_ioctl_create_device()
(CVE-2019-6974)
* kernel: kvm: guest userspace to guest kernel write (CVE-2018-10853)
* kernel: TLB flush happens too late on mremap (CVE-2018-18281)
* kernel: fix race condition between mmget_not_zero()/get_task_mm() and
core dumping (CVE-2019-11599)
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):
* guest softlockup in mem_cgroup_reparent_charges with 800GB guests
(BZ#1770111)
* [RHEL7.7] Refined TSC clocksource calibration occasionally fails on some
SkyLake-X servers (BZ#1775682)
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/):
1589890 - CVE-2018-10853 kernel: kvm: guest userspace to guest kernel write
1645121 - CVE-2018-18281 kernel: TLB flush happens too late on mremap
1671913 - CVE-2019-6974 Kernel: KVM: potential use-after-free via kvm_ioctl_create_device()
1705937 - CVE-2019-11599 kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping
1738705 - CVE-2018-20856 kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c
6. Package List:
Red Hat Enterprise Linux Server AUS (v. 7.4):
Source:
kernel-3.10.0-693.62.1.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-693.62.1.el7.noarch.rpm
kernel-doc-3.10.0-693.62.1.el7.noarch.rpm
x86_64:
kernel-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debug-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.62.1.el7.x86_64.rpm
kernel-devel-3.10.0-693.62.1.el7.x86_64.rpm
kernel-headers-3.10.0-693.62.1.el7.x86_64.rpm
kernel-tools-3.10.0-693.62.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-693.62.1.el7.x86_64.rpm
perf-3.10.0-693.62.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
python-perf-3.10.0-693.62.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server E4S (v. 7.4):
Source:
kernel-3.10.0-693.62.1.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-693.62.1.el7.noarch.rpm
kernel-doc-3.10.0-693.62.1.el7.noarch.rpm
ppc64le:
kernel-3.10.0-693.62.1.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-693.62.1.el7.ppc64le.rpm
kernel-debug-3.10.0-693.62.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-693.62.1.el7.ppc64le.rpm
kernel-devel-3.10.0-693.62.1.el7.ppc64le.rpm
kernel-headers-3.10.0-693.62.1.el7.ppc64le.rpm
kernel-tools-3.10.0-693.62.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-693.62.1.el7.ppc64le.rpm
perf-3.10.0-693.62.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm
python-perf-3.10.0-693.62.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm
x86_64:
kernel-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debug-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.62.1.el7.x86_64.rpm
kernel-devel-3.10.0-693.62.1.el7.x86_64.rpm
kernel-headers-3.10.0-693.62.1.el7.x86_64.rpm
kernel-tools-3.10.0-693.62.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-693.62.1.el7.x86_64.rpm
perf-3.10.0-693.62.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
python-perf-3.10.0-693.62.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server TUS (v. 7.4):
Source:
kernel-3.10.0-693.62.1.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-693.62.1.el7.noarch.rpm
kernel-doc-3.10.0-693.62.1.el7.noarch.rpm
x86_64:
kernel-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debug-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.62.1.el7.x86_64.rpm
kernel-devel-3.10.0-693.62.1.el7.x86_64.rpm
kernel-headers-3.10.0-693.62.1.el7.x86_64.rpm
kernel-tools-3.10.0-693.62.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-693.62.1.el7.x86_64.rpm
perf-3.10.0-693.62.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
python-perf-3.10.0-693.62.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 7.4):
x86_64:
kernel-debug-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.62.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-693.62.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional E4S (v. 7.4):
ppc64le:
kernel-debug-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-693.62.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-693.62.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-693.62.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm
x86_64:
kernel-debug-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.62.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-693.62.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional TUS (v. 7.4):
x86_64:
kernel-debug-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.62.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-693.62.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.62.1.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-2018-10853
https://access.redhat.com/security/cve/CVE-2018-18281
https://access.redhat.com/security/cve/CVE-2018-20856
https://access.redhat.com/security/cve/CVE-2019-6974
https://access.redhat.com/security/cve/CVE-2019-11599
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 2020 Red Hat, Inc.
- -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=IHlt
- -----END PGP SIGNATURE-----
- --
RHSA-announce mailing list
RHSA-announce@redhat.com
https://www.redhat.com/mailman/listinfo/rhsa-announce
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
https://www.auscert.org.au/bulletins/
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=W6U5
-----END PGP SIGNATURE-----