what you don't know can hurt you

Red Hat Security Advisory 2020-0100-01

Red Hat Security Advisory 2020-0100-01
Posted Jan 14, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-0100-01 - 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 use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2018-18281, CVE-2018-20856, CVE-2019-11599
MD5 | c7e5a02c23dbfd583473988c79c2a082

Red Hat Security Advisory 2020-0100-01

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

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

Synopsis: Important: kernel-rt security and bug fix update
Advisory ID: RHSA-2020:0100-01
Product: Red Hat Enterprise MRG for RHEL-6
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0100
Issue date: 2020-01-14
CVE Names: CVE-2018-18281 CVE-2018-20856 CVE-2019-11599
=====================================================================

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: Use-after-free in __blk_drain_queue() function in
block/blk-core.c (CVE-2018-20856)

* kernel: TLB flush happens too late on mremap (CVE-2018-18281)

* kernel: fix race condition between mmget_not_zero()/get_task_mm() and
core dumping (CVE-2019-11599)

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#1779367)

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/):

1645121 - CVE-2018-18281 kernel: TLB flush happens too late on mremap
1705937 - CVE-2019-11599 kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping
1738705 - CVE-2018-20856 kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c
1779367 - 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-3.10.0-693.62.1.rt56.659.el6rt.src.rpm

noarch:
kernel-rt-doc-3.10.0-693.62.1.rt56.659.el6rt.noarch.rpm
kernel-rt-firmware-3.10.0-693.62.1.rt56.659.el6rt.noarch.rpm

x86_64:
kernel-rt-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
kernel-rt-debug-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
kernel-rt-debug-devel-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
kernel-rt-debuginfo-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
kernel-rt-devel-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
kernel-rt-trace-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
kernel-rt-trace-devel-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
kernel-rt-vanilla-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
kernel-rt-vanilla-debuginfo-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
kernel-rt-vanilla-devel-3.10.0-693.62.1.rt56.659.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-2018-18281
https://access.redhat.com/security/cve/CVE-2018-20856
https://access.redhat.com/security/cve/CVE-2019-11599
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 2020 Red Hat, Inc.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=uCtl
-----END PGP SIGNATURE-----

--
RHSA-announce mailing list
RHSA-announce@redhat.com
https://www.redhat.com/mailman/listinfo/rhsa-announce
Login or Register to add favorites

File Archive:

May 2021

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    May 1st
    1 Files
  • 2
    May 2nd
    4 Files
  • 3
    May 3rd
    27 Files
  • 4
    May 4th
    17 Files
  • 5
    May 5th
    3 Files
  • 6
    May 6th
    32 Files
  • 7
    May 7th
    11 Files
  • 8
    May 8th
    0 Files
  • 9
    May 9th
    0 Files
  • 10
    May 10th
    0 Files
  • 11
    May 11th
    0 Files
  • 12
    May 12th
    0 Files
  • 13
    May 13th
    0 Files
  • 14
    May 14th
    0 Files
  • 15
    May 15th
    0 Files
  • 16
    May 16th
    0 Files
  • 17
    May 17th
    0 Files
  • 18
    May 18th
    0 Files
  • 19
    May 19th
    0 Files
  • 20
    May 20th
    0 Files
  • 21
    May 21st
    0 Files
  • 22
    May 22nd
    0 Files
  • 23
    May 23rd
    0 Files
  • 24
    May 24th
    0 Files
  • 25
    May 25th
    0 Files
  • 26
    May 26th
    0 Files
  • 27
    May 27th
    0 Files
  • 28
    May 28th
    0 Files
  • 29
    May 29th
    0 Files
  • 30
    May 30th
    0 Files
  • 31
    May 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close