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

Synopsis:          Important: kernel security and bug fix update
Advisory ID:       RHSA-2019:2473-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2019:2473
Issue date:        2019-08-13
CVE Names:         CVE-2017-17805 CVE-2018-17972 CVE-2019-1125 
                   CVE-2019-5489 
=====================================================================

1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 6.

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 Desktop (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, 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: Salsa20 encryption algorithm does not correctly handle
zero-length inputs allowing local attackers to cause denial-of-service
(CVE-2017-17805)

* kernel: Unprivileged users able to inspect kernel stacks of arbitrary
tasks (CVE-2018-17972)

* kernel: hw: Spectre SWAPGS gadget vulnerability (CVE-2019-1125)

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):

* OOPS with Null Pointer exception in v4l2_ctrl_query_menu when second arg
of function is NULL (BZ#1647975)

* Another RHEL 6 hang in congestion_wait() (BZ#1658254)

* kernel crash after running user space script (BZ#1663262)

* RHEL-6.10: Don't report the use of retpoline on Skylake as vulnerable
(BZ#1666102)

* Bad pagetable: 000f “*pdpt = 0000000000000000 *pde = 0000000000000000” 
RHEL 6 32bit (BZ#1702782)

* fs/binfmt_misc.c: do not allow offset overflow [6.10.z] (BZ#1710149)

* Wrong spectre backport causing linux headers to break compilation of 3rd
party packages (BZ#1722185)

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/):

1528312 - CVE-2017-17805 kernel: Salsa20 encryption algorithm does not correctly handle zero-length inputs allowing local attackers to cause denial-of-service
1636349 - CVE-2018-17972 kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks
1664110 - CVE-2019-5489 Kernel: page cache side channel attacks
1724389 - CVE-2019-1125 kernel: hw: Spectre SWAPGS gadget vulnerability

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
kernel-2.6.32-754.18.2.el6.src.rpm

i386:
kernel-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-devel-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-754.18.2.el6.i686.rpm
kernel-devel-2.6.32-754.18.2.el6.i686.rpm
kernel-headers-2.6.32-754.18.2.el6.i686.rpm
perf-2.6.32-754.18.2.el6.i686.rpm
perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm

noarch:
kernel-abi-whitelists-2.6.32-754.18.2.el6.noarch.rpm
kernel-doc-2.6.32-754.18.2.el6.noarch.rpm
kernel-firmware-2.6.32-754.18.2.el6.noarch.rpm

x86_64:
kernel-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debug-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debug-devel-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-devel-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debuginfo-common-i686-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-common-x86_64-2.6.32-754.18.2.el6.x86_64.rpm
kernel-devel-2.6.32-754.18.2.el6.x86_64.rpm
kernel-headers-2.6.32-754.18.2.el6.x86_64.rpm
perf-2.6.32-754.18.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm
perf-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

i386:
kernel-debug-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-754.18.2.el6.i686.rpm
perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm
python-perf-2.6.32-754.18.2.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm

x86_64:
kernel-debug-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-754.18.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
python-perf-2.6.32-754.18.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
kernel-2.6.32-754.18.2.el6.src.rpm

noarch:
kernel-abi-whitelists-2.6.32-754.18.2.el6.noarch.rpm
kernel-doc-2.6.32-754.18.2.el6.noarch.rpm
kernel-firmware-2.6.32-754.18.2.el6.noarch.rpm

x86_64:
kernel-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debug-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debug-devel-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-devel-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debuginfo-common-i686-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-common-x86_64-2.6.32-754.18.2.el6.x86_64.rpm
kernel-devel-2.6.32-754.18.2.el6.x86_64.rpm
kernel-headers-2.6.32-754.18.2.el6.x86_64.rpm
perf-2.6.32-754.18.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm
perf-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

x86_64:
kernel-debug-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-754.18.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
python-perf-2.6.32-754.18.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
kernel-2.6.32-754.18.2.el6.src.rpm

i386:
kernel-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-devel-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-754.18.2.el6.i686.rpm
kernel-devel-2.6.32-754.18.2.el6.i686.rpm
kernel-headers-2.6.32-754.18.2.el6.i686.rpm
perf-2.6.32-754.18.2.el6.i686.rpm
perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm

noarch:
kernel-abi-whitelists-2.6.32-754.18.2.el6.noarch.rpm
kernel-doc-2.6.32-754.18.2.el6.noarch.rpm
kernel-firmware-2.6.32-754.18.2.el6.noarch.rpm

ppc64:
kernel-2.6.32-754.18.2.el6.ppc64.rpm
kernel-bootwrapper-2.6.32-754.18.2.el6.ppc64.rpm
kernel-debug-2.6.32-754.18.2.el6.ppc64.rpm
kernel-debug-debuginfo-2.6.32-754.18.2.el6.ppc64.rpm
kernel-debug-devel-2.6.32-754.18.2.el6.ppc64.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-754.18.2.el6.ppc64.rpm
kernel-devel-2.6.32-754.18.2.el6.ppc64.rpm
kernel-headers-2.6.32-754.18.2.el6.ppc64.rpm
perf-2.6.32-754.18.2.el6.ppc64.rpm
perf-debuginfo-2.6.32-754.18.2.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.ppc64.rpm

s390x:
kernel-2.6.32-754.18.2.el6.s390x.rpm
kernel-debug-2.6.32-754.18.2.el6.s390x.rpm
kernel-debug-debuginfo-2.6.32-754.18.2.el6.s390x.rpm
kernel-debug-devel-2.6.32-754.18.2.el6.s390x.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-754.18.2.el6.s390x.rpm
kernel-devel-2.6.32-754.18.2.el6.s390x.rpm
kernel-headers-2.6.32-754.18.2.el6.s390x.rpm
kernel-kdump-2.6.32-754.18.2.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-754.18.2.el6.s390x.rpm
kernel-kdump-devel-2.6.32-754.18.2.el6.s390x.rpm
perf-2.6.32-754.18.2.el6.s390x.rpm
perf-debuginfo-2.6.32-754.18.2.el6.s390x.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.s390x.rpm

x86_64:
kernel-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debug-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debug-devel-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-devel-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debuginfo-common-i686-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-common-x86_64-2.6.32-754.18.2.el6.x86_64.rpm
kernel-devel-2.6.32-754.18.2.el6.x86_64.rpm
kernel-headers-2.6.32-754.18.2.el6.x86_64.rpm
perf-2.6.32-754.18.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm
perf-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

i386:
kernel-debug-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-754.18.2.el6.i686.rpm
perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm
python-perf-2.6.32-754.18.2.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm

ppc64:
kernel-debug-debuginfo-2.6.32-754.18.2.el6.ppc64.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-754.18.2.el6.ppc64.rpm
perf-debuginfo-2.6.32-754.18.2.el6.ppc64.rpm
python-perf-2.6.32-754.18.2.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.ppc64.rpm

s390x:
kernel-debug-debuginfo-2.6.32-754.18.2.el6.s390x.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-754.18.2.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-754.18.2.el6.s390x.rpm
perf-debuginfo-2.6.32-754.18.2.el6.s390x.rpm
python-perf-2.6.32-754.18.2.el6.s390x.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.s390x.rpm

x86_64:
kernel-debug-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-754.18.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
python-perf-2.6.32-754.18.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
kernel-2.6.32-754.18.2.el6.src.rpm

i386:
kernel-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-devel-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-754.18.2.el6.i686.rpm
kernel-devel-2.6.32-754.18.2.el6.i686.rpm
kernel-headers-2.6.32-754.18.2.el6.i686.rpm
perf-2.6.32-754.18.2.el6.i686.rpm
perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm

noarch:
kernel-abi-whitelists-2.6.32-754.18.2.el6.noarch.rpm
kernel-doc-2.6.32-754.18.2.el6.noarch.rpm
kernel-firmware-2.6.32-754.18.2.el6.noarch.rpm

x86_64:
kernel-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debug-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debug-devel-2.6.32-754.18.2.el6.i686.rpm
kernel-debug-devel-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debuginfo-common-i686-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-common-x86_64-2.6.32-754.18.2.el6.x86_64.rpm
kernel-devel-2.6.32-754.18.2.el6.x86_64.rpm
kernel-headers-2.6.32-754.18.2.el6.x86_64.rpm
perf-2.6.32-754.18.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm
perf-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

i386:
kernel-debug-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-754.18.2.el6.i686.rpm
perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm
python-perf-2.6.32-754.18.2.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.i686.rpm

x86_64:
kernel-debug-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-754.18.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-754.18.2.el6.x86_64.rpm
python-perf-2.6.32-754.18.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-754.18.2.el6.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-2017-17805
https://access.redhat.com/security/cve/CVE-2018-17972
https://access.redhat.com/security/cve/CVE-2019-1125
https://access.redhat.com/security/cve/CVE-2019-5489
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/articles/4329821

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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