[RHSA-2023:4814-01] Important: kernel-rt security and bug fix update

Tue Aug 29 14:49:38 UTC 2023

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: ipvlan: out-of-bounds write caused by unclear skb->cb
(CVE-2023-3090)

* kernel: kernel info leak issue in pfkey_register (CVE-2022-1353)

* kernel: unmap_mapping_range() race with munmap() on VM_PFNMAP mappings
leads to stale TLB entry (CVE-2022-39188)

* kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c
(CVE-2023-0458)

* kernel: tls: race condition in do_tls_getsockopt may lead to
use-after-free or NULL pointer dereference (CVE-2023-28466)

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.z11 Batch
(BZ#2219867)

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/):

2066819 - CVE-2022-1353 kernel: kernel info leak issue in pfkey_register
2130141 - CVE-2022-39188 kernel: unmap_mapping_range() race with munmap() on VM_PFNMAP mappings leads to stale TLB entry
2179000 - CVE-2023-28466 kernel: tls: race condition in do_tls_getsockopt may lead to use-after-free or NULL pointer dereference
2193219 - CVE-2023-0458 kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c
2218672 - CVE-2023-3090 kernel: ipvlan: out-of-bounds write caused by unclear skb->cb

6. Package List:

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

Source:
kernel-rt-5.14.0-70.70.1.rt21.141.el9_0.src.rpm

x86_64:
kernel-rt-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-core-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debug-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debug-core-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debug-debuginfo-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debug-devel-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debug-kvm-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debug-modules-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debug-modules-extra-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debuginfo-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-devel-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-kvm-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-modules-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-modules-extra-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm

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

Source:
kernel-rt-5.14.0-70.70.1.rt21.141.el9_0.src.rpm

x86_64:
kernel-rt-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-core-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debug-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debug-core-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debug-debuginfo-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debug-devel-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debug-modules-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debug-modules-extra-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debuginfo-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-devel-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-modules-5.14.0-70.70.1.rt21.141.el9_0.x86_64.rpm
kernel-rt-modules-extra-5.14.0-70.70.1.rt21.141.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-2022-1353
https://access.redhat.com/security/cve/CVE-2022-39188
https://access.redhat.com/security/cve/CVE-2023-0458
https://access.redhat.com/security/cve/CVE-2023-3090
https://access.redhat.com/security/cve/CVE-2023-28466
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2023 Red Hat, Inc.
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