Home / mailings [RHSA-2023:3470-01] Important: kernel-rt security and bug fix update
Posted on 06 June 2023
RedHat===================================================================== Red Hat Security Advisory
Synopsis: Important: kernel-rt security and bug fix update
Advisory ID: RHSA-2023:3470-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3470
Issue date: 2023-06-06
CVE Names: CVE-2023-0461 CVE-2023-2008 CVE-2023-32233
=====================================================================
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: net/ulp: use-after-free in listening ULP sockets (CVE-2023-0461)
* kernel: udmabuf: improper validation of array index leading to local
privilege escalation (CVE-2023-2008)
* kernel: netfilter: use-after-free in nf_tables when processing batch
requests can lead to privilege escalation (CVE-2023-32233)
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-debug: BUG: MAX_LOCKDEP_CHAINS too low (BZ#2181286)
* kernel-rt: update RT source tree to the latest RHEL-9.0.z9 Batch
(BZ#2186491)
* kernel-rt: INFO: task deadline_test:1778 blocked for more than 622
seconds (BZ#2188662)
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/):
2176192 - CVE-2023-0461 kernel: net/ulp: use-after-free in listening ULP sockets
2186862 - CVE-2023-2008 kernel: udmabuf: improper validation of array index leading to local privilege escalation
2196105 - CVE-2023-32233 kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation
6. Package List:
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0):
Source:
kernel-rt-5.14.0-70.58.1.rt21.129.el9_0.src.rpm
x86_64:
kernel-rt-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-core-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debug-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debug-core-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debug-debuginfo-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debug-devel-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debug-kvm-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debug-modules-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debug-modules-extra-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debuginfo-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-devel-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-kvm-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-modules-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-modules-extra-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
Red Hat Enterprise Linux Real Time EUS (v.9.0):
Source:
kernel-rt-5.14.0-70.58.1.rt21.129.el9_0.src.rpm
x86_64:
kernel-rt-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-core-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debug-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debug-core-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debug-debuginfo-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debug-devel-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debug-modules-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debug-modules-extra-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debuginfo-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-devel-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-modules-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
kernel-rt-modules-extra-5.14.0-70.58.1.rt21.129.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-2023-0461
https://access.redhat.com/security/cve/CVE-2023-2008
https://access.redhat.com/security/cve/CVE-2023-32233
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.
