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AUSCERT External Security Bulletin Redistribution
ESB-2024.0563
kernel-rt security and bug fix update
29 January 2024
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel-rt
Publisher: Red Hat
Operating System: Red Hat
Resolution: Patch/Upgrade
CVE Names: CVE-2023-46813 CVE-2023-45871 CVE-2023-5178
CVE-2023-4623 CVE-2023-3777 CVE-2023-3567
CVE-2023-2162 CVE-2023-1195 CVE-2022-41858
CVE-2022-36879
Original Bulletin:
https://access.redhat.com/errata/RHSA-2024:0431
Comment: CVSS (Max): 9.8 CVE-2023-5178 (CVSS:3.1/AV:N/AC:L/PR:N/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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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Red Hat Security Advisory
Synopsis: Important: kernel-rt security and bug fix update
Advisory ID: RHSA-2024:0431
Product: Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
Advisory URL: https://access.redhat.com/errata/RHSA-2024:0431
Issue date: 2024-01-25
CVE Names: CVE-2022-36879 CVE-2022-41858 CVE-2023-1195 CVE-2023-2162
CVE-2023-3567 CVE-2023-3777 CVE-2023-4623 CVE-2023-5178
CVE-2023-45871 CVE-2023-46813
=====================================================================
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 for NFV EUS (v.9.0) - x86_64
Red Hat Enterprise Linux Real Time 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/sched: sch_hfsc UAF (CVE-2023-4623)
* kernel: use after free in nvmet_tcp_free_crypto in NVMe (CVE-2023-5178)
* kernel: IGB driver inadequate buffer size for frames larger than MTU
(CVE-2023-45871)
* kernel: xfrm_expand_policies() in net/xfrm/xfrm_policy.c can cause a refcount
to be dropped twice (CVE-2022-36879)
* kernel: null-ptr-deref vulnerabilities in sl_tx_timeout in drivers/net/slip
(CVE-2022-41858)
* kernel: use-after-free caused by invalid pointer hostname in fs/cifs/connect.c
(CVE-2023-1195)
* kernel: UAF during login when accessing the shost ipaddress (CVE-2023-2162)
* kernel: use after free in vcs_read in drivers/tty/vt/vc_screen.c due to race
(CVE-2023-3567)
* kernel: use-after-free in netfilter: nf_tables (CVE-2023-3777)
* kernel: SEV-ES local priv escalation (CVE-2023-46813)
Bug Fix(es):
* kernel-rt: update RT source tree to the latest RHEL-9.0.z Batch 14
(RHEL-17273)
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.
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/):
2119855 - CVE-2022-36879 - kernel: xfrm_expand_policies() in
net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice
2144379 - CVE-2022-41858 - kernel: null-ptr-deref vulnerabilities in
sl_tx_timeout in drivers/net/slip
2154171 - CVE-2023-1195 - kernel: use-after-free caused by invalid pointer
hostname in fs/cifs/connect.c
2187773 - CVE-2023-2162 - kernel: UAF during login when accessing the shost
ipaddress
2221463 - CVE-2023-3567 - kernel: use after free in vcs_read in
drivers/tty/vt/vc_screen.c due to race
2237750 - CVE-2023-3777 - kernel: use-after-free in netfilter: nf_tables
2237757 - CVE-2023-4623 - kernel: net/sched: sch_hfsc UAF
2241924 - CVE-2023-5178 - kernel: use after free in nvmet_tcp_free_crypto in
NVMe
2244723 - CVE-2023-45871 - kernel: IGB driver inadequate buffer size for frames
larger than MTU
2246944 - CVE-2023-46813 - kernel: SEV-ES local priv escalation
6. Package List:
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
Source:
kernel-rt-0:5.14.0-70.85.1.rt21.156.el9_0.src.rpm
x86_64:
kernel-rt-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-core-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debug-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debug-core-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debug-debuginfo-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debug-devel-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debug-kvm-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debug-modules-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debug-modules-extra-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debuginfo-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-devel-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-kvm-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-modules-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-modules-extra-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
Red Hat Enterprise Linux Real Time EUS (v.9.0)
Source:
kernel-rt-0:5.14.0-70.85.1.rt21.156.el9_0.src.rpm
x86_64:
kernel-rt-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-core-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debug-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debug-core-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debug-debuginfo-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debug-devel-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debug-kvm-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debug-modules-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debug-modules-extra-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debuginfo-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-devel-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-kvm-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-modules-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
kernel-rt-modules-extra-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
7. References:
https://access.redhat.com/security/cve/CVE-2022-36879
https://access.redhat.com/security/cve/CVE-2022-41858
https://access.redhat.com/security/cve/CVE-2023-1195
https://access.redhat.com/security/cve/CVE-2023-2162
https://access.redhat.com/security/cve/CVE-2023-3567
https://access.redhat.com/security/cve/CVE-2023-3777
https://access.redhat.com/security/cve/CVE-2023-4623
https://access.redhat.com/security/cve/CVE-2023-5178
https://access.redhat.com/security/cve/CVE-2023-45871
https://access.redhat.com/security/cve/CVE-2023-46813
https://access.redhat.com/security/updates/classification/#important
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