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Red Hat Security Advisory 2018-1129-01

Red Hat Security Advisory 2018-1129-01
Posted Apr 18, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-1129-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a speculative execution vulnerability.

tags | advisory, kernel
systems | linux, redhat
SHA-256 | 732aa3487a1cbb7715bf0575d31569d9271a8e005161b61f619353f3bbeccef3

Red Hat Security Advisory 2018-1129-01

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=====================================================================
Red Hat Security Advisory

Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2018:1129-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:1129
Issue date: 2018-04-17
=====================================================================

1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 7.3
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. 7.3) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3) - x86_64
Red Hat Enterprise Linux Server EUS (v. 7.3) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 7.3) - ppc64, ppc64le, x86_64

3. Description:

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

Security Fix(es):

* An industry-wide issue was found in the way many modern microprocessor
designs have implemented speculative execution of instructions (a commonly
used performance optimization). There are three primary variants of the
issue which differ in the way the speculative execution can be exploited.
Variant CVE-2017-5754 relies on the fact that, on impacted microprocessors,
during speculative execution of instruction permission faults, exception
generation triggered by a faulting access is suppressed until the
retirement of the whole instruction block. In a combination with the fact
that memory accesses may populate the cache even when the block is being
dropped and never committed (executed), an unprivileged local attacker
could use this flaw to read privileged (kernel space) memory by conducting
targeted cache side-channel attacks. (CVE-2017-5754, Important, KVM for
Power)

Red Hat would like to thank Google Project Zero for reporting this issue.

Bug Fix(es):

These updated kernel packages include also numerous bug fixes. Space
precludes documenting all of these bug fixes in this advisory. See the bug
fix descriptions in the related Knowledge Article:
https://access.redhat.com/articles/3413511

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/):

1519781 - CVE-2017-5754 hw: cpu: speculative execution permission faults handling

6. Package List:

Red Hat Enterprise Linux ComputeNode EUS (v. 7.3):

Source:
kernel-3.10.0-514.48.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-514.48.1.el7.noarch.rpm
kernel-doc-3.10.0-514.48.1.el7.noarch.rpm

x86_64:
kernel-3.10.0-514.48.1.el7.x86_64.rpm
kernel-debug-3.10.0-514.48.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-514.48.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.48.1.el7.x86_64.rpm
kernel-devel-3.10.0-514.48.1.el7.x86_64.rpm
kernel-headers-3.10.0-514.48.1.el7.x86_64.rpm
kernel-tools-3.10.0-514.48.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-514.48.1.el7.x86_64.rpm
perf-3.10.0-514.48.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm
python-perf-3.10.0-514.48.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3):

x86_64:
kernel-debug-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.48.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-514.48.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 7.3):

Source:
kernel-3.10.0-514.48.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-514.48.1.el7.noarch.rpm
kernel-doc-3.10.0-514.48.1.el7.noarch.rpm

ppc64:
kernel-3.10.0-514.48.1.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-514.48.1.el7.ppc64.rpm
kernel-debug-3.10.0-514.48.1.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-514.48.1.el7.ppc64.rpm
kernel-debug-devel-3.10.0-514.48.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-514.48.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-514.48.1.el7.ppc64.rpm
kernel-devel-3.10.0-514.48.1.el7.ppc64.rpm
kernel-headers-3.10.0-514.48.1.el7.ppc64.rpm
kernel-tools-3.10.0-514.48.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-514.48.1.el7.ppc64.rpm
kernel-tools-libs-3.10.0-514.48.1.el7.ppc64.rpm
perf-3.10.0-514.48.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-514.48.1.el7.ppc64.rpm
python-perf-3.10.0-514.48.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-514.48.1.el7.ppc64.rpm

ppc64le:
kernel-3.10.0-514.48.1.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-514.48.1.el7.ppc64le.rpm
kernel-debug-3.10.0-514.48.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-514.48.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-514.48.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-514.48.1.el7.ppc64le.rpm
kernel-devel-3.10.0-514.48.1.el7.ppc64le.rpm
kernel-headers-3.10.0-514.48.1.el7.ppc64le.rpm
kernel-tools-3.10.0-514.48.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-514.48.1.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-514.48.1.el7.ppc64le.rpm
perf-3.10.0-514.48.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-514.48.1.el7.ppc64le.rpm
python-perf-3.10.0-514.48.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-514.48.1.el7.ppc64le.rpm

s390x:
kernel-3.10.0-514.48.1.el7.s390x.rpm
kernel-debug-3.10.0-514.48.1.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-514.48.1.el7.s390x.rpm
kernel-debug-devel-3.10.0-514.48.1.el7.s390x.rpm
kernel-debuginfo-3.10.0-514.48.1.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-514.48.1.el7.s390x.rpm
kernel-devel-3.10.0-514.48.1.el7.s390x.rpm
kernel-headers-3.10.0-514.48.1.el7.s390x.rpm
kernel-kdump-3.10.0-514.48.1.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-514.48.1.el7.s390x.rpm
kernel-kdump-devel-3.10.0-514.48.1.el7.s390x.rpm
perf-3.10.0-514.48.1.el7.s390x.rpm
perf-debuginfo-3.10.0-514.48.1.el7.s390x.rpm
python-perf-3.10.0-514.48.1.el7.s390x.rpm
python-perf-debuginfo-3.10.0-514.48.1.el7.s390x.rpm

x86_64:
kernel-3.10.0-514.48.1.el7.x86_64.rpm
kernel-debug-3.10.0-514.48.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-514.48.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.48.1.el7.x86_64.rpm
kernel-devel-3.10.0-514.48.1.el7.x86_64.rpm
kernel-headers-3.10.0-514.48.1.el7.x86_64.rpm
kernel-tools-3.10.0-514.48.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-514.48.1.el7.x86_64.rpm
perf-3.10.0-514.48.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm
python-perf-3.10.0-514.48.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 7.3):

ppc64:
kernel-debug-debuginfo-3.10.0-514.48.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-514.48.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-514.48.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-514.48.1.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-514.48.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-514.48.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-514.48.1.el7.ppc64.rpm

ppc64le:
kernel-debug-debuginfo-3.10.0-514.48.1.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-514.48.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-514.48.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-514.48.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-514.48.1.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-514.48.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-514.48.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-514.48.1.el7.ppc64le.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.48.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-514.48.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.48.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.48.1.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/updates/classification/#important
https://access.redhat.com/articles/3413511

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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