Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2020.0549
kernel security, bug fix, and enhancement update
19 February 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: linux kernel
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Red Hat Enterprise Linux WS/Desktop 7
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Root Compromise -- Existing Account
Access Privileged Data -- Existing Account
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-17666 CVE-2019-17133 CVE-2019-14895
CVE-2019-11599 CVE-2019-11085 CVE-2018-20976
CVE-2018-20856
Reference: ASB-2020.0033
ASB-2020.0002
ESB-2020.0415
ESB-2020.0411
Original Bulletin:
https://access.redhat.com/errata/RHSA-2020:0543
- --------------------------BEGIN INCLUDED TEXT--------------------
- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel security, bug fix, and enhancement update
Advisory ID: RHSA-2020:0543-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0543
Issue date: 2020-02-18
CVE Names: CVE-2018-20856 CVE-2018-20976 CVE-2019-11085
CVE-2019-11599 CVE-2019-14895 CVE-2019-17133
CVE-2019-17666
=====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 7.5
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. 7.5) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5) - x86_64
Red Hat Enterprise Linux Server EUS (v. 7.5) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 7.5) - ppc64, ppc64le, 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: use-after-free in fs/xfs/xfs_super.c (CVE-2018-20976)
* kernel: insufficient input validation in kernel mode driver in Intel i915
graphics leads to privilege escalation (CVE-2019-11085)
* kernel: heap-based buffer overflow in mwifiex_process_country_ie()
function in drivers/net/wireless/marvell/mwifiex/sta_ioctl.c
(CVE-2019-14895)
* kernel: buffer overflow in cfg80211_mgd_wext_giwessid in
net/wireless/wext-sme.c (CVE-2019-17133)
* kernel: rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in
the Linux kernel lacks a certain upper-bound check, leading to a buffer
overflow (CVE-2019-17666)
* 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):
* [Hyper-V][RHEL7.6]Hyper-V guest waiting indefinitely for RCU callback
when removing a mem cgroup (BZ#1783175)
Enhancement(s):
* Selective backport: perf: Sync with upstream v4.16 (BZ#1782751)
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/):
1705937 - CVE-2019-11599 kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping
1710405 - CVE-2019-11085 kernel: insufficient input validation in kernel mode driver in Intel i915 graphics leads to privilege escalation
1738705 - CVE-2018-20856 kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c
1743547 - CVE-2018-20976 kernel: use-after-free in fs/xfs/xfs_super.c
1763690 - CVE-2019-17666 kernel: rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux kernel lacks a certain upper-bound check, leading to a buffer overflow
1771909 - CVE-2019-17133 kernel: buffer overflow in cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c
1774870 - CVE-2019-14895 kernel: heap-based buffer overflow in mwifiex_process_country_ie() function in drivers/net/wireless/marvell/mwifiex/sta_ioctl.c
6. Package List:
Red Hat Enterprise Linux ComputeNode EUS (v. 7.5):
Source:
kernel-3.10.0-862.48.1.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-862.48.1.el7.noarch.rpm
kernel-doc-3.10.0-862.48.1.el7.noarch.rpm
x86_64:
kernel-3.10.0-862.48.1.el7.x86_64.rpm
kernel-debug-3.10.0-862.48.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-862.48.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-862.48.1.el7.x86_64.rpm
kernel-devel-3.10.0-862.48.1.el7.x86_64.rpm
kernel-headers-3.10.0-862.48.1.el7.x86_64.rpm
kernel-tools-3.10.0-862.48.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-862.48.1.el7.x86_64.rpm
perf-3.10.0-862.48.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
python-perf-3.10.0-862.48.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5):
x86_64:
kernel-debug-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-862.48.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-862.48.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 7.5):
Source:
kernel-3.10.0-862.48.1.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-862.48.1.el7.noarch.rpm
kernel-doc-3.10.0-862.48.1.el7.noarch.rpm
ppc64:
kernel-3.10.0-862.48.1.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-862.48.1.el7.ppc64.rpm
kernel-debug-3.10.0-862.48.1.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-862.48.1.el7.ppc64.rpm
kernel-debug-devel-3.10.0-862.48.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-862.48.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-862.48.1.el7.ppc64.rpm
kernel-devel-3.10.0-862.48.1.el7.ppc64.rpm
kernel-headers-3.10.0-862.48.1.el7.ppc64.rpm
kernel-tools-3.10.0-862.48.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-862.48.1.el7.ppc64.rpm
kernel-tools-libs-3.10.0-862.48.1.el7.ppc64.rpm
perf-3.10.0-862.48.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-862.48.1.el7.ppc64.rpm
python-perf-3.10.0-862.48.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-862.48.1.el7.ppc64.rpm
ppc64le:
kernel-3.10.0-862.48.1.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-862.48.1.el7.ppc64le.rpm
kernel-debug-3.10.0-862.48.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-862.48.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-862.48.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-862.48.1.el7.ppc64le.rpm
kernel-devel-3.10.0-862.48.1.el7.ppc64le.rpm
kernel-headers-3.10.0-862.48.1.el7.ppc64le.rpm
kernel-tools-3.10.0-862.48.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-862.48.1.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-862.48.1.el7.ppc64le.rpm
perf-3.10.0-862.48.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-862.48.1.el7.ppc64le.rpm
python-perf-3.10.0-862.48.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-862.48.1.el7.ppc64le.rpm
s390x:
kernel-3.10.0-862.48.1.el7.s390x.rpm
kernel-debug-3.10.0-862.48.1.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-862.48.1.el7.s390x.rpm
kernel-debug-devel-3.10.0-862.48.1.el7.s390x.rpm
kernel-debuginfo-3.10.0-862.48.1.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-862.48.1.el7.s390x.rpm
kernel-devel-3.10.0-862.48.1.el7.s390x.rpm
kernel-headers-3.10.0-862.48.1.el7.s390x.rpm
kernel-kdump-3.10.0-862.48.1.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-862.48.1.el7.s390x.rpm
kernel-kdump-devel-3.10.0-862.48.1.el7.s390x.rpm
perf-3.10.0-862.48.1.el7.s390x.rpm
perf-debuginfo-3.10.0-862.48.1.el7.s390x.rpm
python-perf-3.10.0-862.48.1.el7.s390x.rpm
python-perf-debuginfo-3.10.0-862.48.1.el7.s390x.rpm
x86_64:
kernel-3.10.0-862.48.1.el7.x86_64.rpm
kernel-debug-3.10.0-862.48.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-862.48.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-862.48.1.el7.x86_64.rpm
kernel-devel-3.10.0-862.48.1.el7.x86_64.rpm
kernel-headers-3.10.0-862.48.1.el7.x86_64.rpm
kernel-tools-3.10.0-862.48.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-862.48.1.el7.x86_64.rpm
perf-3.10.0-862.48.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
python-perf-3.10.0-862.48.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional EUS (v. 7.5):
ppc64:
kernel-debug-debuginfo-3.10.0-862.48.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-862.48.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-862.48.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-862.48.1.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-862.48.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-862.48.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-862.48.1.el7.ppc64.rpm
ppc64le:
kernel-debug-debuginfo-3.10.0-862.48.1.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-862.48.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-862.48.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-862.48.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-862.48.1.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-862.48.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-862.48.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-862.48.1.el7.ppc64le.rpm
x86_64:
kernel-debug-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-862.48.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-862.48.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-862.48.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-862.48.1.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-2018-20856
https://access.redhat.com/security/cve/CVE-2018-20976
https://access.redhat.com/security/cve/CVE-2019-11085
https://access.redhat.com/security/cve/CVE-2019-11599
https://access.redhat.com/security/cve/CVE-2019-14895
https://access.redhat.com/security/cve/CVE-2019-17133
https://access.redhat.com/security/cve/CVE-2019-17666
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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=Elbv
- -----END PGP SIGNATURE-----
- --------------------------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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=13Np
-----END PGP SIGNATURE-----