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Red Hat Security Advisory

Synopsis:          Important: kernel-rt security and bug fix update
Advisory ID:       RHSA-2022:6582-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2022:6582
Issue date:        2022-09-20
CVE Names:         CVE-2022-2078 CVE-2022-34918
====================================================================
1. Summary:

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.

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 (v. 9) - x86_64
Red Hat Enterprise Linux Real Time for NFV (v. 9) - 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: heap overflow in nft_set_elem_init() (CVE-2022-34918)

* kernel: vulnerability of buffer overflow in nft_set_desc_concat_parse()
(CVE-2022-2078)

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.z3 Batch
(BZ#2119577)

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/):

2096178 - CVE-2022-2078 kernel: Vulnerability of buffer overflow in nft_set_desc_concat_parse()
2104423 - CVE-2022-34918 kernel: heap overflow in nft_set_elem_init()

6. Package List:

Red Hat Enterprise Linux Real Time for NFV (v. 9):

Source:
kernel-rt-5.14.0-70.26.1.rt21.98.el9_0.src.rpm

x86_64:
kernel-rt-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-core-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debug-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debug-core-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debug-debuginfo-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debug-devel-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debug-kvm-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debug-modules-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debug-modules-extra-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debuginfo-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-devel-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-kvm-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-modules-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-modules-extra-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm

Red Hat Enterprise Linux Real Time (v. 9):

Source:
kernel-rt-5.14.0-70.26.1.rt21.98.el9_0.src.rpm

x86_64:
kernel-rt-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-core-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debug-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debug-core-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debug-debuginfo-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debug-devel-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debug-modules-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debug-modules-extra-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debuginfo-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-devel-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-modules-5.14.0-70.26.1.rt21.98.el9_0.x86_64.rpm
kernel-rt-modules-extra-5.14.0-70.26.1.rt21.98.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-2022-2078
https://access.redhat.com/security/cve/CVE-2022-34918
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 2022 Red Hat, Inc.
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