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Red Hat 9.0 Kernel-RT Update: RHSA-2023:4138 Critical Security Fix

red hat
Calendar Grey July 18, 2023
Dist Redhat Esm H88
The kernel-rt upgrade for Red Hat Enterprise Linux 9.0 includes critical security patches and comprehensive details on resolved issues.
An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0 Extended Update Support

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 in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c (CVE-2022-42896)
* kernel: use-after-free vulnerability in the perf_group_detach function of the Linux Kernel Performance Events (CVE-2023-2235)
* kernel: uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM (CVE-2022-1016)
* kernel: use-after-free related to leaf anon_vma double reuse (CVE-2022-42703)
* 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 latest RHEL-9.0.z10 Batch (BZ#2209984)

Topics%20covered

Topics Covered

security advisory bug fix kernel security Red Hat Enterprise Linux important update kernel-rt real time kernel

References

https://access.redhat.com/security/cve/CVE-2022-1016 https://access.redhat.com/security/cve/CVE-2022-42703 https://access.redhat.com/security/cve/CVE-2022-42896 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-2023-2235 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0):
Source: kernel-rt-5.14.0-70.64.1.rt21.135.el9_0.src.rpm
x86_64: kernel-rt-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm kernel-rt-core-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm kernel-rt-debug-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm kernel-rt-debug-core-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm kernel-rt-debug-debuginfo-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm kernel-rt-debug-devel-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm kernel-rt-debug-kvm-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm kernel-rt-debug-modules-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm kernel-rt-debug-modules-extra-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm kernel-rt-debuginfo-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm kernel-rt-debuginfo-common-x86_64-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm kernel-rt-devel-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm kernel-rt-kvm-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm kernel-rt-modules-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm kernel-rt-modules-extra-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm
Red Hat Enterprise Linux Real Time EUS (v.9.0):
Source: kernel-rt-5.14.0-70.64.1.rt21.135.el9_0.src.rpm
x86_64: kernel-rt-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm kernel-rt-core-5.14.0-70.64.1.rt21.135.el9_0.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:4138-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:4138
Issue date: 2023-07-18

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0Extended Update Support.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 bug fix kernel security Red Hat Enterprise Linux important update kernel-rt real time kernel

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

Bugs Fixed

2066614 - CVE-2022-1016 kernel: uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM

2133483 - CVE-2022-42703 kernel: use-after-free related to leaf anon_vma double reuse

2147364 - CVE-2022-42896 kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c

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

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

2192589 - CVE-2023-2235 kernel: use-after-free vulnerability in the perf_group_detach function of the Linux Kernel Performance Events

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