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Red Hat Security Advisory 2020-2777-01

Red Hat Security Advisory 2020-2777-01
Posted Jul 1, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2777-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, kernel
systems | linux, redhat
advisories | CVE-2018-20169
MD5 | d25be2031f65d7a76dc6ee683b75e819

Red Hat Security Advisory 2020-2777-01

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

Synopsis: Moderate: kernel-rt security and bug fix update
Advisory ID: RHSA-2020:2777-01
Product: Red Hat Enterprise MRG for RHEL-6
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2777
Issue date: 2020-07-01
CVE Names: CVE-2018-20169
=====================================================================

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 Moderate. 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: usb: missing size check in the __usb_get_extra_descriptor()
leading to DoS (CVE-2018-20169)

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#1837733)

* kernel: hw: provide reporting and microcode mitigation toggle for
CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) [mrg-2.5.z]
(BZ#1840691)

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/):

1660385 - CVE-2018-20169 kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS

6. Package List:

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

Source:
kernel-rt-3.10.0-693.69.1.rt56.667.el6rt.src.rpm

noarch:
kernel-rt-doc-3.10.0-693.69.1.rt56.667.el6rt.noarch.rpm
kernel-rt-firmware-3.10.0-693.69.1.rt56.667.el6rt.noarch.rpm

x86_64:
kernel-rt-3.10.0-693.69.1.rt56.667.el6rt.x86_64.rpm
kernel-rt-debug-3.10.0-693.69.1.rt56.667.el6rt.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-693.69.1.rt56.667.el6rt.x86_64.rpm
kernel-rt-debug-devel-3.10.0-693.69.1.rt56.667.el6rt.x86_64.rpm
kernel-rt-debuginfo-3.10.0-693.69.1.rt56.667.el6rt.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-693.69.1.rt56.667.el6rt.x86_64.rpm
kernel-rt-devel-3.10.0-693.69.1.rt56.667.el6rt.x86_64.rpm
kernel-rt-trace-3.10.0-693.69.1.rt56.667.el6rt.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-693.69.1.rt56.667.el6rt.x86_64.rpm
kernel-rt-trace-devel-3.10.0-693.69.1.rt56.667.el6rt.x86_64.rpm
kernel-rt-vanilla-3.10.0-693.69.1.rt56.667.el6rt.x86_64.rpm
kernel-rt-vanilla-debuginfo-3.10.0-693.69.1.rt56.667.el6rt.x86_64.rpm
kernel-rt-vanilla-devel-3.10.0-693.69.1.rt56.667.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-2018-20169
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/solutions/5142691

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2020 Red Hat, Inc.
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