Issued:
2023-06-06
Updated:
2023-06-06

RHSA-2023:3470 - 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/ulp: use-after-free in listening ULP sockets (CVE-2023-0461)

  • kernel: udmabuf: improper validation of array index leading to local privilege escalation (CVE-2023-2008)

  • kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation (CVE-2023-32233)

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-debug: BUG: MAX_LOCKDEP_CHAINS too low (BZ#2181286)

  • kernel-rt: update RT source tree to the latest RHEL-9.0.z9 Batch (BZ#2186491)

  • kernel-rt: INFO: task deadline_test:1778 blocked for more than 622 seconds (BZ#2188662)

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-core-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
  • kernel-rt-debug-debuginfo-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
  • kernel-rt-debuginfo-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
  • kernel-rt-modules-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
  • kernel-rt-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
  • kernel-rt-debug-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
  • kernel-rt-kvm-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
  • kernel-rt-debug-devel-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
  • kernel-rt-modules-extra-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
  • kernel-rt-devel-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
  • kernel-rt-5.14.0-70.58.1.rt21.129.el9_0.src.rpm
  • kernel-rt-debug-modules-extra-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
  • kernel-rt-debug-core-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
  • kernel-rt-debug-kvm-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
  • kernel-rt-debug-modules-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
  • kernel-rt-debuginfo-common-x86_64-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm

Fixes

CVEs

References

Additional information