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AUSCERT External Security Bulletin Redistribution
ESB-2018.3673
Important: kernel-alt security and bug fix update
27 November 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel-alt
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Impact/Access: Root Compromise -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-18021 CVE-2018-17182
Reference: ESB-2018.3577
ESB-2018.3057
ESB-2018.3039
ESB-2018.3036
Original Bulletin:
https://access.redhat.com/errata/RHSA-2018:3656
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Red Hat Security Advisory
Synopsis: Important: kernel-alt security and bug fix update
Advisory ID: RHSA-2018:3656-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:3656
Issue date: 2018-11-26
CVE Names: CVE-2018-17182 CVE-2018-18021
=====================================================================
1. Summary:
An update for kernel-alt is now available for Red Hat Enterprise Linux 7.
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 for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, noarch, ppc64le, s390x
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, noarch, ppc64le
3. Description:
The kernel-alt packages provide the Linux kernel version 4.x.
Security Fix(es):
* kernel: Use-after-free in the vmacache_flush_all function resulting in a
possible privilege escalation (CVE-2018-17182)
* kernel: Privilege escalation on arm64 via KVM hypervisor (CVE-2018-18021)
For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.
Bug Fix(es):
These updated kernel packages include also numerous bug fixes. Space
precludes documenting all of the bug fixes in this advisory. See the
descriptions in the related Knowledge Article:
https://access.redhat.com/articles/3714391
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/):
1631205 - CVE-2018-17182 kernel: Use-after-free in the vmacache_flush_all function resulting in a possible privilege escalation
1635475 - CVE-2018-18021 kernel: Privilege escalation on arm64 via KVM hypervisor
6. Package List:
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):
Source:
kernel-alt-4.14.0-115.2.2.el7a.src.rpm
aarch64:
kernel-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-debug-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-debug-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-debug-devel-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-debuginfo-common-aarch64-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-devel-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-headers-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-tools-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-tools-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-tools-libs-4.14.0-115.2.2.el7a.aarch64.rpm
perf-4.14.0-115.2.2.el7a.aarch64.rpm
perf-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
python-perf-4.14.0-115.2.2.el7a.aarch64.rpm
python-perf-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
noarch:
kernel-abi-whitelists-4.14.0-115.2.2.el7a.noarch.rpm
kernel-doc-4.14.0-115.2.2.el7a.noarch.rpm
ppc64le:
kernel-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-bootwrapper-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-debug-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-debug-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-devel-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-headers-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-tools-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-tools-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-tools-libs-4.14.0-115.2.2.el7a.ppc64le.rpm
perf-4.14.0-115.2.2.el7a.ppc64le.rpm
perf-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
python-perf-4.14.0-115.2.2.el7a.ppc64le.rpm
python-perf-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
s390x:
kernel-4.14.0-115.2.2.el7a.s390x.rpm
kernel-debug-4.14.0-115.2.2.el7a.s390x.rpm
kernel-debug-debuginfo-4.14.0-115.2.2.el7a.s390x.rpm
kernel-debug-devel-4.14.0-115.2.2.el7a.s390x.rpm
kernel-debuginfo-4.14.0-115.2.2.el7a.s390x.rpm
kernel-debuginfo-common-s390x-4.14.0-115.2.2.el7a.s390x.rpm
kernel-devel-4.14.0-115.2.2.el7a.s390x.rpm
kernel-headers-4.14.0-115.2.2.el7a.s390x.rpm
kernel-kdump-4.14.0-115.2.2.el7a.s390x.rpm
kernel-kdump-debuginfo-4.14.0-115.2.2.el7a.s390x.rpm
kernel-kdump-devel-4.14.0-115.2.2.el7a.s390x.rpm
perf-4.14.0-115.2.2.el7a.s390x.rpm
perf-debuginfo-4.14.0-115.2.2.el7a.s390x.rpm
python-perf-4.14.0-115.2.2.el7a.s390x.rpm
python-perf-debuginfo-4.14.0-115.2.2.el7a.s390x.rpm
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7):
aarch64:
kernel-debug-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-debuginfo-common-aarch64-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-tools-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-tools-libs-devel-4.14.0-115.2.2.el7a.aarch64.rpm
perf-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
python-perf-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
noarch:
kernel-doc-4.14.0-115.2.2.el7a.noarch.rpm
ppc64le:
kernel-debug-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-debug-devel-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-tools-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-tools-libs-devel-4.14.0-115.2.2.el7a.ppc64le.rpm
perf-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
python-perf-debuginfo-4.14.0-115.2.2.el7a.ppc64le.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-2018-17182
https://access.redhat.com/security/cve/CVE-2018-18021
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/articles/3714391
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2018 Red Hat, Inc.
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