exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

Red Hat Security Advisory 2018-2763-01

Red Hat Security Advisory 2018-2763-01
Posted Sep 25, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-2763-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include an integer overflow.

tags | advisory, overflow, kernel
systems | linux, redhat
advisories | CVE-2018-14634
SHA-256 | 8a8017a298354d783ca92b38f20cd161f990b790585b9243060757f8dec68608

Red Hat Security Advisory 2018-2763-01

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-2018:2763-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:2763
Issue date: 2018-09-25
CVE Names: CVE-2018-14634
====================================================================
1. Summary:

An update for kernel-rt is now available for Red Hat Enterprise Linux 7.

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 Realtime (v. 7) - noarch, x86_64
Red Hat Enterprise Linux for Real Time for NFV (v. 7) - 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: Integer overflow in Linux's create_elf_tables function
(CVE-2018-14634)

For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.

Red Hat would like to thank Qualys Research Labs for reporting this issue.

Bug Fix(es):

* The kernel-rt packages have been upgraded to the 3.10.0-862.14.3 source
tree, which provides a number of bug fixes over the previous version.
(BZ#1616429)

* Previously, preemption was enabled too early after a context switch. If a
task was migrated to another CPU after a context switch, a mismatch between
CPU and runqueue during load balancing sometimes occurred. Consequently, a
runnable task on an idle CPU failed to run, and the operating system became
unresponsive. This update disables preemption in the schedule_tail()
function. As a result, CPU migration during post-schedule processing no
longer occurs, which prevents the above mismatch. The operating system no
longer hangs due to this bug. (BZ#1617941)

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/):

1616429 - kernel-rt: update to the RHEL7.5.z batch#4 source tree
1617941 - RT system hang due to wrong of rq's nr_running [rhel-7.5.z]
1624498 - CVE-2018-14634 kernel: Integer overflow in Linux's create_elf_tables function

6. Package List:

Red Hat Enterprise Linux for Real Time for NFV (v. 7):

Source:
kernel-rt-3.10.0-862.14.4.rt56.821.el7.src.rpm

noarch:
kernel-rt-doc-3.10.0-862.14.4.rt56.821.el7.noarch.rpm

x86_64:
kernel-rt-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-debug-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-debug-kvm-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-debug-kvm-debuginfo-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-devel-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-kvm-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-kvm-debuginfo-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-trace-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-trace-kvm-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-trace-kvm-debuginfo-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm

Red Hat Enterprise Linux Realtime (v. 7):

Source:
kernel-rt-3.10.0-862.14.4.rt56.821.el7.src.rpm

noarch:
kernel-rt-doc-3.10.0-862.14.4.rt56.821.el7.noarch.rpm

x86_64:
kernel-rt-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-debug-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-devel-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-trace-3.10.0-862.14.4.rt56.821.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-862.14.4.rt56.821.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-2018-14634
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 2018 Red Hat, Inc.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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zUnG
-----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:

March 2024

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

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close