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Red Hat Security Advisory 2018-3591-01

Red Hat Security Advisory 2018-3591-01
Posted Nov 14, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-3591-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include an integer overflow vulnerability.

tags | advisory, overflow, kernel
systems | linux, redhat
advisories | CVE-2017-18344, CVE-2018-14634
SHA-256 | ccf8060e03ef67ab708802c8654d1b6d77da8af66f7e306750e5d6334f9a4f25

Red Hat Security Advisory 2018-3591-01

Change Mirror Download
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

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

Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2018:3591-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:3591
Issue date: 2018-11-13
CVE Names: CVE-2017-18344 CVE-2018-14634
=====================================================================

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):

* kernel: out-of-bounds access in the show_timer function in
kernel/time/posix-timers.c (CVE-2017-18344)

* kernel: Integer overflow in Linux's create_elf_tables function
(CVE-2018-14634)

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.

Red Hat would like to thank Qualys Research Labs for reporting
CVE-2018-14634.

Bug Fix(es):

* On systems running Red Hat Enterprise Linux 7.3 with Red Hat OpenShift
Container Platform 3.5, a node sometimes got into "NodeNotReady" state
after a CPU softlockup. Consequently, the node was not available. This
update fixes some scheduling latency sources in memory compaction and in
the inodes memory reclaim. As a result, nodes no longer get into
"NodeNotReady" state under the described circumstances. (BZ#1625866)

* Previously, a kernel panic occurred when the kernel tried to make an out
of bound access to the array that describes the L1 Terminal Fault (L1TF)
mitigation state on systems without Extended Page Tables (EPT) support.
This update extends the array of mitigation states to cover all the states,
which effectively prevents out of bound array access. Also, this update
enables rejecting invalid, irrelevant values, that might be erroneously
provided by the userspace. As a result, the kernel no longer panics in the
described scenario. (BZ#1629566)

* Previously, a packet was missing the User Datagram Protocol (UDP) payload
checksum during a full checksum computation, if the hardware checksum was
not applied. As a consequence, a packet with an incorrect checksum was
dropped by a peer. With this update, the kernel includes the UDP payload
checksum during the full checksum computation. As a result, the checksum is
computed correctly and the packet can be received by the peer. (BZ#1635794)

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/):

1610958 - CVE-2017-18344 kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c
1624498 - CVE-2018-14634 kernel: Integer overflow in Linux's create_elf_tables function

6. Package List:

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

Source:
kernel-3.10.0-514.61.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-514.61.1.el7.noarch.rpm
kernel-doc-3.10.0-514.61.1.el7.noarch.rpm

x86_64:
kernel-3.10.0-514.61.1.el7.x86_64.rpm
kernel-debug-3.10.0-514.61.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-514.61.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.61.1.el7.x86_64.rpm
kernel-devel-3.10.0-514.61.1.el7.x86_64.rpm
kernel-headers-3.10.0-514.61.1.el7.x86_64.rpm
kernel-tools-3.10.0-514.61.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-514.61.1.el7.x86_64.rpm
perf-3.10.0-514.61.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm
python-perf-3.10.0-514.61.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm

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

x86_64:
kernel-debug-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.61.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-514.61.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm

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

Source:
kernel-3.10.0-514.61.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-514.61.1.el7.noarch.rpm
kernel-doc-3.10.0-514.61.1.el7.noarch.rpm

ppc64:
kernel-3.10.0-514.61.1.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-514.61.1.el7.ppc64.rpm
kernel-debug-3.10.0-514.61.1.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-514.61.1.el7.ppc64.rpm
kernel-debug-devel-3.10.0-514.61.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-514.61.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-514.61.1.el7.ppc64.rpm
kernel-devel-3.10.0-514.61.1.el7.ppc64.rpm
kernel-headers-3.10.0-514.61.1.el7.ppc64.rpm
kernel-tools-3.10.0-514.61.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-514.61.1.el7.ppc64.rpm
kernel-tools-libs-3.10.0-514.61.1.el7.ppc64.rpm
perf-3.10.0-514.61.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-514.61.1.el7.ppc64.rpm
python-perf-3.10.0-514.61.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-514.61.1.el7.ppc64.rpm

ppc64le:
kernel-3.10.0-514.61.1.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-514.61.1.el7.ppc64le.rpm
kernel-debug-3.10.0-514.61.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-514.61.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-514.61.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-514.61.1.el7.ppc64le.rpm
kernel-devel-3.10.0-514.61.1.el7.ppc64le.rpm
kernel-headers-3.10.0-514.61.1.el7.ppc64le.rpm
kernel-tools-3.10.0-514.61.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-514.61.1.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-514.61.1.el7.ppc64le.rpm
perf-3.10.0-514.61.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-514.61.1.el7.ppc64le.rpm
python-perf-3.10.0-514.61.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-514.61.1.el7.ppc64le.rpm

s390x:
kernel-3.10.0-514.61.1.el7.s390x.rpm
kernel-debug-3.10.0-514.61.1.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-514.61.1.el7.s390x.rpm
kernel-debug-devel-3.10.0-514.61.1.el7.s390x.rpm
kernel-debuginfo-3.10.0-514.61.1.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-514.61.1.el7.s390x.rpm
kernel-devel-3.10.0-514.61.1.el7.s390x.rpm
kernel-headers-3.10.0-514.61.1.el7.s390x.rpm
kernel-kdump-3.10.0-514.61.1.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-514.61.1.el7.s390x.rpm
kernel-kdump-devel-3.10.0-514.61.1.el7.s390x.rpm
perf-3.10.0-514.61.1.el7.s390x.rpm
perf-debuginfo-3.10.0-514.61.1.el7.s390x.rpm
python-perf-3.10.0-514.61.1.el7.s390x.rpm
python-perf-debuginfo-3.10.0-514.61.1.el7.s390x.rpm

x86_64:
kernel-3.10.0-514.61.1.el7.x86_64.rpm
kernel-debug-3.10.0-514.61.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-514.61.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.61.1.el7.x86_64.rpm
kernel-devel-3.10.0-514.61.1.el7.x86_64.rpm
kernel-headers-3.10.0-514.61.1.el7.x86_64.rpm
kernel-tools-3.10.0-514.61.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-514.61.1.el7.x86_64.rpm
perf-3.10.0-514.61.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm
python-perf-3.10.0-514.61.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm

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

ppc64:
kernel-debug-debuginfo-3.10.0-514.61.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-514.61.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-514.61.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-514.61.1.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-514.61.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-514.61.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-514.61.1.el7.ppc64.rpm

ppc64le:
kernel-debug-debuginfo-3.10.0-514.61.1.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-514.61.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-514.61.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-514.61.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-514.61.1.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-514.61.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-514.61.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-514.61.1.el7.ppc64le.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.61.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-514.61.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.61.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.61.1.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-2017-18344
https://access.redhat.com/security/cve/CVE-2018-14634
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/mutagen-astronomy

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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