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AUSCERT External Security Bulletin Redistribution
ESB-2020.2330
kernel security and bug fix update
8 July 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: Denial of Service -- Existing Account
Access Privileged Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-12888 CVE-2020-0543
Reference: ESB-2020.2179
ESB-2020.2006
Original Bulletin:
https://access.redhat.com/errata/RHSA-2020:2831
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Red Hat Security Advisory
Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2020:2831-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2831
Issue date: 2020-07-07
CVE Names: CVE-2020-12888
=====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 7.2
Advanced 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 Server AUS (v. 7.2) - noarch, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 7.2) - x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
Security Fix(es):
* Kernel: vfio: access to disabled MMIO space of some devices may lead to
DoS scenario (CVE-2020-12888)
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):
* kernel: hw: provide reporting and microcode mitigation toggle for
CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) (BZ#1840674)
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/):
1836244 - CVE-2020-12888 Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario
6. Package List:
Red Hat Enterprise Linux Server AUS (v. 7.2):
Source:
kernel-3.10.0-327.89.1.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-327.89.1.el7.noarch.rpm
kernel-doc-3.10.0-327.89.1.el7.noarch.rpm
x86_64:
kernel-3.10.0-327.89.1.el7.x86_64.rpm
kernel-debug-3.10.0-327.89.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-327.89.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-327.89.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-327.89.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-327.89.1.el7.x86_64.rpm
kernel-devel-3.10.0-327.89.1.el7.x86_64.rpm
kernel-headers-3.10.0-327.89.1.el7.x86_64.rpm
kernel-tools-3.10.0-327.89.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-327.89.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-327.89.1.el7.x86_64.rpm
perf-3.10.0-327.89.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-327.89.1.el7.x86_64.rpm
python-perf-3.10.0-327.89.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-327.89.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 7.2):
x86_64:
kernel-debug-debuginfo-3.10.0-327.89.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-327.89.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-327.89.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-327.89.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-327.89.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-327.89.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-327.89.1.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-2020-12888
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/solutions/5142691
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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