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

Red Hat Security Advisory 2021-2726-01

Red Hat Security Advisory 2021-2726-01
Posted Jul 21, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-2726-01 - 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-2019-20934, CVE-2020-11668, CVE-2021-33033, CVE-2021-33034, CVE-2021-33909
SHA-256 | d6efc4fe2546e1493ba8e36a97c8fe29405d425bb301d46e0f650cdaf1e8942e

Red Hat Security Advisory 2021-2726-01

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-2021:2726-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2726
Issue date: 2021-07-20
CVE Names: CVE-2019-20934 CVE-2020-11668 CVE-2021-33033
CVE-2021-33034 CVE-2021-33909
====================================================================
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 for Real Time (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: size_t-to-int conversion vulnerability in the filesystem layer
(CVE-2021-33909)

* kernel: use-after-free in net/bluetooth/hci_event.c when destroying an
hci_chan (CVE-2021-33034)

* kernel: use-after-free in show_numa_stats function (CVE-2019-20934)

* kernel: mishandles invalid descriptors in
drivers/media/usb/gspca/xirlink_cit.c (CVE-2020-11668)

* kernel: use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c
(CVE-2021-33033)

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):

* kernel-rt: update to the latest RHEL7.9.z7 source tree (BZ#1967333)

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/):

1824792 - CVE-2020-11668 kernel: mishandles invalid descriptors in drivers/media/usb/gspca/xirlink_cit.c
1902788 - CVE-2019-20934 kernel: use-after-free in show_numa_stats function
1961300 - CVE-2021-33033 kernel: use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c
1961305 - CVE-2021-33034 kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan
1970273 - CVE-2021-33909 kernel: size_t-to-int conversion vulnerability in the filesystem layer

6. Package List:

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

Source:
kernel-rt-3.10.0-1160.36.2.rt56.1179.el7.src.rpm

noarch:
kernel-rt-doc-3.10.0-1160.36.2.rt56.1179.el7.noarch.rpm

x86_64:
kernel-rt-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-debug-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-debug-kvm-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-debug-kvm-debuginfo-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-devel-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-kvm-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-kvm-debuginfo-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-trace-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-trace-kvm-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-trace-kvm-debuginfo-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm

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

Source:
kernel-rt-3.10.0-1160.36.2.rt56.1179.el7.src.rpm

noarch:
kernel-rt-doc-3.10.0-1160.36.2.rt56.1179.el7.noarch.rpm

x86_64:
kernel-rt-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-debug-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-devel-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-trace-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-1160.36.2.rt56.1179.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-1160.36.2.rt56.1179.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-2019-20934
https://access.redhat.com/security/cve/CVE-2020-11668
https://access.redhat.com/security/cve/CVE-2021-33033
https://access.redhat.com/security/cve/CVE-2021-33034
https://access.redhat.com/security/cve/CVE-2021-33909
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/RHSB-2021-006

8. Contact:

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

Copyright 2021 Red Hat, Inc.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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oN/K
-----END PGP SIGNATURE-----

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

File Archive:

April 2024

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