Issued:
2023-08-01
Updated:
2023-08-01

RHSA-2023:4378 - Important: kernel-rt security and bug fix update

Synopsis

Important: kernel-rt security and bug fix update

Type/Severity

Security Advisory Important

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 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.

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: 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)

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.

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_649x86_64
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions9.6x86_64
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions9.4x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support9.6x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support9.4x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle9.6x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle9.4x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle9.2x86_64

Updated Packages

  • kernel-rt-modules-core-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-devel-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-kvm-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-debug-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
  • kernel-rt-5.14.0-284.25.1.rt14.310.el9_2.src.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-debug-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-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-debuginfo-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-modules-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm

Fixes

CVEs

References

Additional information