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

Synopsis:          Important: kernel-rt security and bug fix update
Advisory ID:       RHSA-2019:4057-01
Product:           Red Hat Enterprise MRG for RHEL-6
Advisory URL:      https://access.redhat.com/errata/RHSA-2019:4057
Issue date:        2019-12-03
CVE Names:         CVE-2017-10661 CVE-2017-18208 CVE-2019-5489 
                   CVE-2019-11811 
=====================================================================

1. Summary:

An update for kernel-rt is now available for Red Hat Enterprise MRG 2.

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 MRG Realtime for RHEL 6 Server v.2 - noarch, x86_64

3. Description:

The kernel-rt packages provide the Real Time Linux Kernel, which enables
fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

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

* kernel: Handling of might_cancel queueing is not properly pretected
against race (CVE-2017-10661)

* kernel: Inifinite loop vulnerability in mm/madvise.c:madvise_willneed()
function allows local denial of service (CVE-2017-18208)

* kernel: use-after-free in drivers/char/ipmi/ipmi_si_intf.c,
ipmi_si_mem_io.c, ipmi_si_port_io.c (CVE-2019-11811)

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):

* update the MRG 2.5.z 3.10 realtime-kernel sources (BZ#1765670)

* [MRG/R] pip_stress hangs when a priority inversion occurs (BZ#1772562)

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/):

1481136 - CVE-2017-10661 kernel: Handling of might_cancel queueing is not
 properly pretected against race
1551565 - CVE-2017-18208 kernel: Inifinite loop vulnerability in
 mm/madvise.c:madvise_willneed() function allows local denial of service
1664110 - CVE-2019-5489 Kernel: page cache side channel attacks
1709180 - CVE-2019-11811 kernel: use-after-free in
 drivers/char/ipmi/ipmi_si_intf.c, ipmi_si_mem_io.c, ipmi_si_port_io.c
1765670 - update the MRG 2.5.z 3.10 realtime-kernel sources

6. Package List:

Red Hat MRG Realtime for RHEL 6 Server v.2:

Source:
kernel-rt-3.10.0-693.61.1.rt56.656.el6rt.src.rpm

noarch:
kernel-rt-doc-3.10.0-693.61.1.rt56.656.el6rt.noarch.rpm
kernel-rt-firmware-3.10.0-693.61.1.rt56.656.el6rt.noarch.rpm

x86_64:
kernel-rt-3.10.0-693.61.1.rt56.656.el6rt.x86_64.rpm
kernel-rt-debug-3.10.0-693.61.1.rt56.656.el6rt.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-693.61.1.rt56.656.el6rt.x86_64.rpm
kernel-rt-debug-devel-3.10.0-693.61.1.rt56.656.el6rt.x86_64.rpm
kernel-rt-debuginfo-3.10.0-693.61.1.rt56.656.el6rt.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-693.61.1.rt56.656.el6rt.x86_64.rpm
kernel-rt-devel-3.10.0-693.61.1.rt56.656.el6rt.x86_64.rpm
kernel-rt-trace-3.10.0-693.61.1.rt56.656.el6rt.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-693.61.1.rt56.656.el6rt.x86_64.rpm
kernel-rt-trace-devel-3.10.0-693.61.1.rt56.656.el6rt.x86_64.rpm
kernel-rt-vanilla-3.10.0-693.61.1.rt56.656.el6rt.x86_64.rpm
kernel-rt-vanilla-debuginfo-3.10.0-693.61.1.rt56.656.el6rt.x86_64.rpm
kernel-rt-vanilla-devel-3.10.0-693.61.1.rt56.656.el6rt.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-2017-10661
https://access.redhat.com/security/cve/CVE-2017-18208
https://access.redhat.com/security/cve/CVE-2019-5489
https://access.redhat.com/security/cve/CVE-2019-11811
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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