-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2023.4033
                   kernel-rt security and bug fix update
                               19 July 2023

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           kernel-rt
Publisher:         Red Hat
Operating System:  Red Hat
Resolution:        Patch/Upgrade
CVE Names:         CVE-2022-3564  

Original Bulletin: 
   https://access.redhat.com/errata/RHSA-2023:4150

Comment: CVSS (Max):  7.1 CVE-2022-3564 (CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
         CVSS Source: Red Hat
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

- --------------------------BEGIN INCLUDED TEXT--------------------

- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

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

Synopsis:          Important: kernel-rt security and bug fix update
Advisory ID:       RHSA-2023:4150-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:4150
Issue date:        2023-07-18
CVE Names:         CVE-2022-3564 
=====================================================================

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: use-after-free caused by l2cap_reassemble_sdu() in
net/bluetooth/l2cap_core.c (CVE-2022-3564)

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.z24 source tree (BZ#2212577)

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/):

2150999 - CVE-2022-3564 kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c

6. Package List:

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

Source:
kernel-rt-3.10.0-1160.95.1.rt56.1241.el7.src.rpm

noarch:
kernel-rt-doc-3.10.0-1160.95.1.rt56.1241.el7.noarch.rpm

x86_64:
kernel-rt-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-debug-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-debug-kvm-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-debug-kvm-debuginfo-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-devel-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-kvm-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-kvm-debuginfo-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-trace-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-trace-kvm-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-trace-kvm-debuginfo-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm

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

Source:
kernel-rt-3.10.0-1160.95.1.rt56.1241.el7.src.rpm

noarch:
kernel-rt-doc-3.10.0-1160.95.1.rt56.1241.el7.noarch.rpm

x86_64:
kernel-rt-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-debug-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-devel-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-trace-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-1160.95.1.rt56.1241.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-1160.95.1.rt56.1241.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-2022-3564
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 2023 Red Hat, Inc.
- -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=eYzn
- -----END PGP SIGNATURE-----

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: https://auscert.org.au/gpg-key/
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=WMuo
-----END PGP SIGNATURE-----