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AUSCERT External Security Bulletin Redistribution
ESB-2024.2545
kernel-rt security update
26 April 2024
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AusCERT Security Bulletin Summary
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Product: kernel-rt
Publisher: Red Hat
Operating System: Red Hat
Resolution: Patch/Upgrade
CVE Names: CVE-2023-4459 CVE-2023-1192 CVE-2024-26586
CVE-2023-3812 CVE-2024-26602 CVE-2023-7192
CVE-2021-46915
Original Bulletin:
https://access.redhat.com/errata/RHSA-2024:2008
Comment: CVSS (Max): 7.8 CVE-2023-3812 (CVSS:3.1/AV:L/AC:L/PR:L/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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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Red Hat Security Advisory
Synopsis: Important: kernel-rt security update
Advisory ID: RHSA-2024:2008
Product: Red Hat Enterprise Linux Real Time TUS (v. 8.2)
Advisory URL: https://access.redhat.com/errata/RHSA-2024:2008
Issue date: 2024-04-23
CVE Names: CVE-2021-46915 CVE-2023-1192 CVE-2023-3812 CVE-2023-4459
CVE-2023-7192 CVE-2024-26586 CVE-2024-26602
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1. Summary:
An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2
Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update
Service, and Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions.
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 TUS (v. 8.2) - x86_64
Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2) - 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 smb2_is_status_io_timeout() (CVE-2023-1192)
* kernel: vmxnet3: NULL pointer dereference in vmxnet3_rq_cleanup()
(CVE-2023-4459)
* kernel: tun: bugs for oversize packet when napi frags enabled in
tun_napi_alloc_frags (CVE-2023-3812)
* kernel: refcount leak in ctnetlink_create_conntrack() (CVE-2023-7192)
* kernel: mlxsw: spectrum_acl_tcam: Fix stack corruption (CVE-2024-26586)
* kernel: netfilter: divide error in nft_limit_init (CVE-2021-46915)
* kernel: sched/membarrier: reduce the ability to hammer on sys_membarrier
(CVE-2024-26602)
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/):
2266423 - CVE-2021-46915 - kernel: netfilter: divide error in nft_limit_init
2154178 - CVE-2023-1192 - kernel: use-after-free in smb2_is_status_io_timeout()
2224048 - CVE-2023-3812 - kernel: tun: bugs for oversize packet when napi frags
enabled in tun_napi_alloc_frags
2219268 - CVE-2023-4459 - kernel: vmxnet3: NULL pointer dereference in
vmxnet3_rq_cleanup()
2256279 - CVE-2023-7192 - kernel: refcount leak in ctnetlink_create_conntrack()
2265645 - CVE-2024-26586 - kernel: mlxsw: spectrum_acl_tcam: Fix stack
corruption
2267695 - CVE-2024-26602 - kernel: sched/membarrier: reduce the ability to
hammer on sys_membarrier
6. Package List:
Red Hat Enterprise Linux Real Time TUS (v. 8.2)
Source:
kernel-rt-0:4.18.0-193.133.1.rt13.184.el8_2.src.rpm
x86_64:
kernel-rt-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-core-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debug-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debug-core-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debug-debuginfo-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debug-devel-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debug-kvm-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debug-modules-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debug-modules-extra-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debuginfo-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-devel-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-kvm-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-modules-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-modules-extra-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2)
Source:
kernel-rt-0:4.18.0-193.133.1.rt13.184.el8_2.src.rpm
x86_64:
kernel-rt-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-core-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debug-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debug-core-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debug-debuginfo-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debug-devel-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debug-kvm-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debug-modules-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debug-modules-extra-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debuginfo-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-devel-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-kvm-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-modules-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
kernel-rt-modules-extra-0:4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
7. References:
https://access.redhat.com/security/cve/CVE-2021-46915
https://access.redhat.com/security/cve/CVE-2023-1192
https://access.redhat.com/security/cve/CVE-2023-3812
https://access.redhat.com/security/cve/CVE-2023-4459
https://access.redhat.com/security/cve/CVE-2023-7192
https://access.redhat.com/security/cve/CVE-2024-26586
https://access.redhat.com/security/cve/CVE-2024-26602
https://access.redhat.com/security/updates/classification/#important
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