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

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

                               ESB-2023.4029
                   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-2023-2235 CVE-2023-2124 CVE-2023-2002
                   CVE-2022-42896 CVE-2022-42703 CVE-2022-1016

Original Bulletin: 
   https://access.redhat.com/errata/RHSA-2023:4138

Comment: CVSS (Max):  8.1 CVE-2022-42896 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)
         CVSS Source: Red Hat
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

- --------------------------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-2023:4138-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:4138
Issue date:        2023-07-18
CVE Names:         CVE-2022-1016 CVE-2022-42703 CVE-2022-42896 
                   CVE-2023-2002 CVE-2023-2124 CVE-2023-2235 
=====================================================================

1. Summary:

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0
Extended Update Support.

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 Real Time EUS (v.9.0) - x86_64
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) - 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 l2cap_connect and l2cap_le_connect_req in
net/bluetooth/l2cap_core.c (CVE-2022-42896)

* kernel: use-after-free vulnerability in the perf_group_detach function of
the Linux Kernel Performance Events (CVE-2023-2235)

* kernel: uninitialized registers on stack in nft_do_chain can cause kernel
pointer leakage to UM (CVE-2022-1016)

* kernel: use-after-free related to leaf anon_vma double reuse
(CVE-2022-42703)

* Kernel: bluetooth: Unauthorized management command execution
(CVE-2023-2002)

* kernel: OOB access in the Linux kernel's XFS subsystem (CVE-2023-2124)

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 RT source tree to the latest RHEL-9.0.z10 Batch
(BZ#2209984)

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/):

2066614 - CVE-2022-1016 kernel: uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM
2133483 - CVE-2022-42703 kernel: use-after-free related to leaf anon_vma double reuse
2147364 - CVE-2022-42896 kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c
2187308 - CVE-2023-2002 Kernel: bluetooth: Unauthorized management command execution
2187439 - CVE-2023-2124 kernel: OOB access in the Linux kernel's XFS subsystem
2192589 - CVE-2023-2235 kernel: use-after-free vulnerability in the perf_group_detach function of the Linux Kernel Performance Events

6. Package List:

Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0):

Source:
kernel-rt-5.14.0-70.64.1.rt21.135.el9_0.src.rpm

x86_64:
kernel-rt-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-core-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debug-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debug-core-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debug-debuginfo-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debug-devel-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debug-kvm-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debug-modules-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debug-modules-extra-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debuginfo-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-devel-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-kvm-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-modules-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-modules-extra-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm

Red Hat Enterprise Linux Real Time EUS (v.9.0):

Source:
kernel-rt-5.14.0-70.64.1.rt21.135.el9_0.src.rpm

x86_64:
kernel-rt-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-core-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debug-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debug-core-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debug-debuginfo-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debug-devel-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debug-modules-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debug-modules-extra-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debuginfo-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-devel-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-modules-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
kernel-rt-modules-extra-5.14.0-70.64.1.rt21.135.el9_0.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-2022-1016
https://access.redhat.com/security/cve/CVE-2022-42703
https://access.redhat.com/security/cve/CVE-2022-42896
https://access.redhat.com/security/cve/CVE-2023-2002
https://access.redhat.com/security/cve/CVE-2023-2124
https://access.redhat.com/security/cve/CVE-2023-2235
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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=k9cm
- -----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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=MnIH
-----END PGP SIGNATURE-----