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Red Hat Enterprise Linux 9 RHSA-2023:4378-01 Important Kernel-RT Update

red hat
Calendar Grey August 1, 2023
Dist Redhat Esm H88
The latest kernel-rt upgrade from Red Hat includes critical security enhancements and bug resolutions necessary for maintaining system integrity and safety.
An update for kernel-rt is now available for Red Hat Enterprise Linux 9

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: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)
* kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)
* kernel: KVM: x86/mmu: race condition in direct_page_fault() (CVE-2022-45869)
* kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c (CVE-2023-0458)
* kernel: Spectre v2 SMT mitigations problem (CVE-2023-1998)
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):
* RHEL9 rt: blktests block/024 failed (BZ#2209920)
* Backport pinned timers RT specific behavior for FIFO tasks (BZ#2210071)
* kernel-rt: update RT source tree to the RHEL-9.2z2 source tree (BZ#2215122)
* kernel-rt: update RT source tree to the RHEL-9.2z2b source tree (BZ#2222796)

Topics%20covered

Topics Covered

security advisory security issue bug fix Red Hat Enterprise Linux important impact kernel-rt

References

https://access.redhat.com/security/cve/CVE-2022-45869 https://access.redhat.com/security/cve/CVE-2023-0458 https://access.redhat.com/security/cve/CVE-2023-1998 https://access.redhat.com/security/cve/CVE-2023-3090 https://access.redhat.com/security/cve/CVE-2023-35788 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux NFV (v. 9):
Source: kernel-rt-5.14.0-284.25.1.rt14.310.el9_2.src.rpm
x86_64: kernel-rt-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm kernel-rt-core-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm kernel-rt-debug-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm kernel-rt-debug-core-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm kernel-rt-debug-debuginfo-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm kernel-rt-debug-devel-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm kernel-rt-debug-kvm-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm kernel-rt-debug-modules-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm kernel-rt-debug-modules-core-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm kernel-rt-debug-modules-extra-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm kernel-rt-debuginfo-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm kernel-rt-devel-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm kernel-rt-kvm-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm kernel-rt-modules-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm kernel-rt-modules-core-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm kernel-rt-modules-extra-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
Red Hat Enterprise Linux RT (v. 9):
Source: kernel-rt-5.14.0-284.25.1.rt14.310.el9_2.src.rpm
x86_64:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:4378-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:4378
Issue date: 2023-08-01

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.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 bug fix Red Hat Enterprise Linux important impact kernel-rt

Relevant Releases Architectures

Red Hat Enterprise Linux NFV (v. 9) - x86_64

Red Hat Enterprise Linux RT (v. 9) - x86_64

Bugs Fixed

2151317 - CVE-2022-45869 kernel: KVM: x86/mmu: race condition in direct_page_fault()

2187257 - CVE-2023-1998 kernel: Spectre v2 SMT mitigations problem

2193219 - CVE-2023-0458 kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c

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

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