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Important Kernel-RT Security Update RHSA-2023:4961-01 for RHEL 8.4

red hat
Calendar Grey September 5, 2023
Dist Redhat Esm H88
Oracle issues critical security patch for Solaris 11.4 addressing significant vulnerabilities. System restart needed to apply updates.
An update for kernel-rt is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, ...

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.

Summary

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 vulnerability in the Linux Kernel traffic control index filter (CVE-2023-1829)
* kernel: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)
* kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)
* kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() (CVE-2023-4004)
* kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)
* kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)
* Kernel: bluetooth: Unauthorized management command execution (CVE-2023-2002)
* kernel: OOB access in the Linux kernel's XFS subsystem (CVE-2023-2124)
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 RHEL-8.4.z19 source tree (BZ#2222004)
* pods get restarted due to failed probes (BZ#2227240)

Topics%20covered

Topics Covered

security advisory security issue red hat bug fix important kernel-rt

References

https://access.redhat.com/security/cve/CVE-2023-1829 https://access.redhat.com/security/cve/CVE-2023-2002 https://access.redhat.com/security/cve/CVE-2023-2124 https://access.redhat.com/security/cve/CVE-2023-3090 https://access.redhat.com/security/cve/CVE-2023-3390 https://access.redhat.com/security/cve/CVE-2023-4004 https://access.redhat.com/security/cve/CVE-2023-35001 https://access.redhat.com/security/cve/CVE-2023-35788 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux NFV E4S (v.8.4):
Source: kernel-rt-4.18.0-305.103.1.rt7.178.el8_4.src.rpm
x86_64: kernel-rt-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm kernel-rt-core-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm kernel-rt-debug-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm kernel-rt-debug-core-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm kernel-rt-debug-devel-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm kernel-rt-debug-kvm-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm kernel-rt-debug-modules-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm kernel-rt-debuginfo-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm kernel-rt-devel-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm kernel-rt-kvm-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm kernel-rt-modules-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm kernel-rt-modules-extra-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm
Red Hat Enterprise Linux NFV TUS (v.8.4):
Source: kernel-rt-4.18.0-305.103.1.rt7.178.el8_4.src.rpm
x86_64: kernel-rt-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm kernel-rt-core-4.18.0-305.103.1.rt7.178.el8_4.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:4961-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:4961
Issue date: 2023-09-05

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.4Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4Telecommunications Update Service, and Red Hat Enterprise Linux 8.4 UpdateServices for SAP Solutions.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security issue red hat bug fix important kernel-rt

Relevant Releases Architectures

Red Hat Enterprise Linux NFV E4S (v.8.4) - x86_64

Red Hat Enterprise Linux NFV TUS (v.8.4) - x86_64

Red Hat Enterprise Linux RT TUS (v.8.4) - x86_64

Bugs Fixed

2187308 - CVE-2023-2002 Kernel: bluetooth: Unauthorized management command execution

2187439 - CVE-2023-2124 kernel: OOB access in the Linux kernel's XFS subsystem

2188470 - CVE-2023-1829 kernel: Use-after-free vulnerability in the Linux Kernel traffic control index filter

2213260 - CVE-2023-3390 kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests

2215768 - CVE-2023-35788 kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()

2218672 - CVE-2023-3090 kernel: ipvlan: out-of-bounds write caused by unclear skb->cb

2220892 - CVE-2023-35001 kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval()

2225275 - CVE-2023-4004 kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove()

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