Issued:
2024-01-24
Updated:
2024-01-24

RHSA-2024:0431 - 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 9.0 Extended Update Support.

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: net/sched: sch_hfsc UAF (CVE-2023-4623)

  • kernel: use after free in nvmet_tcp_free_crypto in NVMe (CVE-2023-5178)

  • kernel: IGB driver inadequate buffer size for frames larger than MTU (CVE-2023-45871)

  • kernel: xfrm_expand_policies() in net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice (CVE-2022-36879)

  • kernel: null-ptr-deref vulnerabilities in sl_tx_timeout in drivers/net/slip (CVE-2022-41858)

  • kernel: use-after-free caused by invalid pointer hostname in fs/cifs/connect.c (CVE-2023-1195)

  • kernel: UAF during login when accessing the shost ipaddress (CVE-2023-2162)

  • kernel: use after free in vcs_read in drivers/tty/vt/vc_screen.c due to race (CVE-2023-3567)

  • kernel: use-after-free in netfilter: nf_tables (CVE-2023-3777)

  • kernel: SEV-ES local priv escalation (CVE-2023-46813)

Bug Fix(es):

  • kernel-rt: update RT source tree to the latest RHEL-9.0.z Batch 14 (RHEL-17273)

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.

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_64 - Update Services for SAP Solutions9.0x86_64

Updated Packages

  • kernel-rt-debug-modules-extra-5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
  • kernel-rt-core-5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
  • kernel-rt-5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
  • kernel-rt-debug-kvm-5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
  • kernel-rt-debug-modules-5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
  • kernel-rt-debuginfo-common-x86_64-5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
  • kernel-rt-modules-extra-5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
  • kernel-rt-debug-core-5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
  • kernel-rt-debug-5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
  • kernel-rt-modules-5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
  • kernel-rt-debug-devel-5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
  • kernel-rt-kvm-5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
  • kernel-rt-5.14.0-70.85.1.rt21.156.el9_0.src.rpm
  • kernel-rt-debug-debuginfo-5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
  • kernel-rt-devel-5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm
  • kernel-rt-debuginfo-5.14.0-70.85.1.rt21.156.el9_0.x86_64.rpm

Fixes

CVEs

References

Additional information