Issued:
2024-01-10
Updated:
2024-01-10

RHSA-2024:0134 - Important: kernel-rt security update

Synopsis

Important: kernel-rt security update

Type/Severity

Security Advisory Important

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.

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: use after free in unix_stream_sendpage (CVE-2023-4622)

  • kernel: vmwgfx: reference count issue leads to use-after-free in surface handling (CVE-2023-5633)

  • kernel: netfilter: potential slab-out-of-bound access due to integer underflow (CVE-2023-42753)

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

  • hw amd: Return Address Predictor vulnerability leading to information disclosure (CVE-2023-20569)

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-8.9.z1 Batch (JIRA:RHEL-17347)

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 - Extended Life Cycle8.10x86_64
Red Hat Enterprise Linux for Real Time8x86_64
Red Hat Enterprise Linux for Real Time for NFV8x86_64

Updated Packages

  • kernel-rt-debuginfo-4.18.0-513.11.1.rt7.313.el8_9.x86_64.rpm
  • kernel-rt-debug-devel-4.18.0-513.11.1.rt7.313.el8_9.x86_64.rpm
  • kernel-rt-debug-modules-4.18.0-513.11.1.rt7.313.el8_9.x86_64.rpm
  • kernel-rt-debug-4.18.0-513.11.1.rt7.313.el8_9.x86_64.rpm
  • kernel-rt-modules-4.18.0-513.11.1.rt7.313.el8_9.x86_64.rpm
  • kernel-rt-debuginfo-common-x86_64-4.18.0-513.11.1.rt7.313.el8_9.x86_64.rpm
  • kernel-rt-core-4.18.0-513.11.1.rt7.313.el8_9.x86_64.rpm
  • kernel-rt-4.18.0-513.11.1.rt7.313.el8_9.src.rpm
  • kernel-rt-debug-modules-extra-4.18.0-513.11.1.rt7.313.el8_9.x86_64.rpm
  • kernel-rt-devel-4.18.0-513.11.1.rt7.313.el8_9.x86_64.rpm
  • kernel-rt-debug-kvm-4.18.0-513.11.1.rt7.313.el8_9.x86_64.rpm
  • kernel-rt-debug-debuginfo-4.18.0-513.11.1.rt7.313.el8_9.x86_64.rpm
  • kernel-rt-modules-extra-4.18.0-513.11.1.rt7.313.el8_9.x86_64.rpm
  • kernel-rt-kvm-4.18.0-513.11.1.rt7.313.el8_9.x86_64.rpm
  • kernel-rt-4.18.0-513.11.1.rt7.313.el8_9.x86_64.rpm
  • kernel-rt-debug-core-4.18.0-513.11.1.rt7.313.el8_9.x86_64.rpm

Fixes

CVEs

References

Additional information