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

Synopsis:          Important: kernel security and bug fix update
Advisory ID:       RHSA-2019:2837-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2019:2837
Issue date:        2019-09-20
CVE Names:         CVE-2019-5489 CVE-2019-11810
====================================================================
1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 7.6
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. 7.6) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) - x86_64
Red Hat Enterprise Linux Server EUS (v. 7.6) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 7.6) - ppc64, ppc64le, x86_64

3. Description:

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

Security Fix(es):

* Kernel: page cache side channel attacks (CVE-2019-5489)

* kernel: a NULL pointer dereference in
drivers/scsi/megaraid/megaraid_sas_base.c leading to DoS (CVE-2019-11810)

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):

* [RHEL7.7] Refined TSC clocksource calibration occasionally fails on some
SkyLake-X servers (BZ#1719781)

* tc: incorrect flows statistic on bond device (shared block) (BZ#1719786)

* Qlogic qla2xxx driver version 10.x.x.x pins all irq requests to cpu0 and
associated cores (BZ#1720956)

* libceph: handle an empty authorize reply (BZ#1722769)

* RHEL7.6 - pkey: Indicate old mkvp only if old and curr. mkvp are
different (BZ#1723153)

* RHEL7.6 - qdio: clear intparm during shutdown (BZ#1723154)

* [RHEL7] Fix Spectre V1 vulnerability in vhost code (BZ#1724079)

* [Stratus] 802.3ad bond group member disabled after reboot (or I/O failure
testing) (BZ#1725037)

* Accept validate negotiate if server returns NT_STATUS_NOT_SUPPORTED.
(BZ#1726563)

* [Regression] RHEL7.6 - losing dirty bit during THP splitting, possible
memory corruption (mm-) (BZ#1727108)

* [Intel 7.7 BUG]  BUG: unable to handle kernel paging request at
000000006b4fd010 (BZ#1727110)

* KVM tracebacks causing significant latency to VM (BZ#1728174)

* NULL pointer dereference in vxlan_dellink+0xaa (BZ#1728198)

* [rhel7]NULL pointer dereference at vxlan_fill_metadata_dst (BZ#1728199)

* After update to RHEL 7.6 (3.10.0-957.1.3.el7.x86_64) from 7.4, customer
has experienced multiple panics in kernel at BUG at
drivers/iommu/iova.c:859! (BZ#1731300)

* kernel build: speed up debuginfo extraction (BZ#1731464)

* hpsa driver hard lockup trying to complete a no longer valid completion
on the stack (BZ#1731980)

* XFS: forced shutdown in xfs_trans_cancel during create near ENOSPC
(BZ#1731982)

* TCP packets are segmented when sent to the VLAN device when coming from
VXLAN dev. (BZ#1732812)

* panic handing smb2_reconnect due to a use after free (BZ#1737381)

* Backport TCP follow-up for small buffers (BZ#1739129)

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/):

1664110 - CVE-2019-5489 Kernel: page cache side channel attacks
1709164 - CVE-2019-11810 kernel: a NULL pointer dereference in drivers/scsi/megaraid/megaraid_sas_base.c leading to DoS

6. Package List:

Red Hat Enterprise Linux ComputeNode EUS (v. 7.6):

Source:
kernel-3.10.0-957.35.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-957.35.1.el7.noarch.rpm
kernel-doc-3.10.0-957.35.1.el7.noarch.rpm

x86_64:
bpftool-3.10.0-957.35.1.el7.x86_64.rpm
kernel-3.10.0-957.35.1.el7.x86_64.rpm
kernel-debug-3.10.0-957.35.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-957.35.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.35.1.el7.x86_64.rpm
kernel-devel-3.10.0-957.35.1.el7.x86_64.rpm
kernel-headers-3.10.0-957.35.1.el7.x86_64.rpm
kernel-tools-3.10.0-957.35.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-957.35.1.el7.x86_64.rpm
perf-3.10.0-957.35.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm
python-perf-3.10.0-957.35.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6):

x86_64:
kernel-debug-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.35.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-957.35.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 7.6):

Source:
kernel-3.10.0-957.35.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-957.35.1.el7.noarch.rpm
kernel-doc-3.10.0-957.35.1.el7.noarch.rpm

ppc64:
kernel-3.10.0-957.35.1.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-957.35.1.el7.ppc64.rpm
kernel-debug-3.10.0-957.35.1.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-957.35.1.el7.ppc64.rpm
kernel-debug-devel-3.10.0-957.35.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-957.35.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-957.35.1.el7.ppc64.rpm
kernel-devel-3.10.0-957.35.1.el7.ppc64.rpm
kernel-headers-3.10.0-957.35.1.el7.ppc64.rpm
kernel-tools-3.10.0-957.35.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-957.35.1.el7.ppc64.rpm
kernel-tools-libs-3.10.0-957.35.1.el7.ppc64.rpm
perf-3.10.0-957.35.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-957.35.1.el7.ppc64.rpm
python-perf-3.10.0-957.35.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-957.35.1.el7.ppc64.rpm

ppc64le:
kernel-3.10.0-957.35.1.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-957.35.1.el7.ppc64le.rpm
kernel-debug-3.10.0-957.35.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-957.35.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-957.35.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-957.35.1.el7.ppc64le.rpm
kernel-devel-3.10.0-957.35.1.el7.ppc64le.rpm
kernel-headers-3.10.0-957.35.1.el7.ppc64le.rpm
kernel-tools-3.10.0-957.35.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-957.35.1.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-957.35.1.el7.ppc64le.rpm
perf-3.10.0-957.35.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-957.35.1.el7.ppc64le.rpm
python-perf-3.10.0-957.35.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-957.35.1.el7.ppc64le.rpm

s390x:
kernel-3.10.0-957.35.1.el7.s390x.rpm
kernel-debug-3.10.0-957.35.1.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-957.35.1.el7.s390x.rpm
kernel-debug-devel-3.10.0-957.35.1.el7.s390x.rpm
kernel-debuginfo-3.10.0-957.35.1.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-957.35.1.el7.s390x.rpm
kernel-devel-3.10.0-957.35.1.el7.s390x.rpm
kernel-headers-3.10.0-957.35.1.el7.s390x.rpm
kernel-kdump-3.10.0-957.35.1.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-957.35.1.el7.s390x.rpm
kernel-kdump-devel-3.10.0-957.35.1.el7.s390x.rpm
perf-3.10.0-957.35.1.el7.s390x.rpm
perf-debuginfo-3.10.0-957.35.1.el7.s390x.rpm
python-perf-3.10.0-957.35.1.el7.s390x.rpm
python-perf-debuginfo-3.10.0-957.35.1.el7.s390x.rpm

x86_64:
bpftool-3.10.0-957.35.1.el7.x86_64.rpm
kernel-3.10.0-957.35.1.el7.x86_64.rpm
kernel-debug-3.10.0-957.35.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-957.35.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.35.1.el7.x86_64.rpm
kernel-devel-3.10.0-957.35.1.el7.x86_64.rpm
kernel-headers-3.10.0-957.35.1.el7.x86_64.rpm
kernel-tools-3.10.0-957.35.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-957.35.1.el7.x86_64.rpm
perf-3.10.0-957.35.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm
python-perf-3.10.0-957.35.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 7.6):

ppc64:
kernel-debug-debuginfo-3.10.0-957.35.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-957.35.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-957.35.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-957.35.1.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-957.35.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-957.35.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-957.35.1.el7.ppc64.rpm

ppc64le:
kernel-debug-debuginfo-3.10.0-957.35.1.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-957.35.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-957.35.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-957.35.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-957.35.1.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-957.35.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-957.35.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-957.35.1.el7.ppc64le.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.35.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-957.35.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.35.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.35.1.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-2019-5489
https://access.redhat.com/security/cve/CVE-2019-11810
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 2019 Red Hat, Inc.
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