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AUSCERT External Security Bulletin Redistribution
ESB-2020.0227
kernel security and enhancement update
22 January 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-20976
Reference: ESB-2019.4346.2
Original Bulletin:
https://access.redhat.com/errata/RHSA-2020:0178
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Red Hat Security Advisory
Synopsis: Important: kernel security and enhancement update
Advisory ID: RHSA-2020:0178-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0178
Issue date: 2020-01-21
CVE Names: CVE-2018-20976
=====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 7.3
Advanced Update Support, Red Hat Enterprise Linux 7.3 Telco Extended Update
Support, and Red Hat Enterprise Linux 7.3 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. 7.3) - noarch, x86_64
Red Hat Enterprise Linux Server E4S (v. 7.3) - noarch, ppc64le, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 7.3) - x86_64
Red Hat Enterprise Linux Server Optional E4S (v. 7.3) - ppc64le, x86_64
Red Hat Enterprise Linux Server Optional TUS (v. 7.3) - x86_64
Red Hat Enterprise Linux Server TUS (v. 7.3) - 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 fs/xfs/xfs_super.c (CVE-2018-20976)
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.
Enhancement(s):
* Selective backport: perf: Sync with upstream v4.16 (BZ#1782749)
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/):
1743547 - CVE-2018-20976 kernel: use-after-free in fs/xfs/xfs_super.c
6. Package List:
Red Hat Enterprise Linux Server AUS (v. 7.3):
Source:
kernel-3.10.0-514.72.1.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-514.72.1.el7.noarch.rpm
kernel-doc-3.10.0-514.72.1.el7.noarch.rpm
x86_64:
kernel-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debug-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.72.1.el7.x86_64.rpm
kernel-devel-3.10.0-514.72.1.el7.x86_64.rpm
kernel-headers-3.10.0-514.72.1.el7.x86_64.rpm
kernel-tools-3.10.0-514.72.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-514.72.1.el7.x86_64.rpm
perf-3.10.0-514.72.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
python-perf-3.10.0-514.72.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server E4S (v. 7.3):
Source:
kernel-3.10.0-514.72.1.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-514.72.1.el7.noarch.rpm
kernel-doc-3.10.0-514.72.1.el7.noarch.rpm
ppc64le:
kernel-3.10.0-514.72.1.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-514.72.1.el7.ppc64le.rpm
kernel-debug-3.10.0-514.72.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-514.72.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-514.72.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-514.72.1.el7.ppc64le.rpm
kernel-devel-3.10.0-514.72.1.el7.ppc64le.rpm
kernel-headers-3.10.0-514.72.1.el7.ppc64le.rpm
kernel-tools-3.10.0-514.72.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-514.72.1.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-514.72.1.el7.ppc64le.rpm
perf-3.10.0-514.72.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-514.72.1.el7.ppc64le.rpm
python-perf-3.10.0-514.72.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-514.72.1.el7.ppc64le.rpm
x86_64:
kernel-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debug-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.72.1.el7.x86_64.rpm
kernel-devel-3.10.0-514.72.1.el7.x86_64.rpm
kernel-headers-3.10.0-514.72.1.el7.x86_64.rpm
kernel-tools-3.10.0-514.72.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-514.72.1.el7.x86_64.rpm
perf-3.10.0-514.72.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
python-perf-3.10.0-514.72.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server TUS (v. 7.3):
Source:
kernel-3.10.0-514.72.1.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-514.72.1.el7.noarch.rpm
kernel-doc-3.10.0-514.72.1.el7.noarch.rpm
x86_64:
kernel-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debug-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.72.1.el7.x86_64.rpm
kernel-devel-3.10.0-514.72.1.el7.x86_64.rpm
kernel-headers-3.10.0-514.72.1.el7.x86_64.rpm
kernel-tools-3.10.0-514.72.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-514.72.1.el7.x86_64.rpm
perf-3.10.0-514.72.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
python-perf-3.10.0-514.72.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 7.3):
x86_64:
kernel-debug-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.72.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-514.72.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional E4S (v. 7.3):
ppc64le:
kernel-debug-debuginfo-3.10.0-514.72.1.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-514.72.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-514.72.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-514.72.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-514.72.1.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-514.72.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-514.72.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-514.72.1.el7.ppc64le.rpm
x86_64:
kernel-debug-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.72.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-514.72.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional TUS (v. 7.3):
x86_64:
kernel-debug-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.72.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-514.72.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.72.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.72.1.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-2018-20976
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.
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