Issued:
2023-11-21
Updated:
2023-11-21

RHSA-2023:7424 - 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 7.

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_qfq component can be exploited if in qfq_change_agg function happens qfq_enqueue overhead (CVE-2023-3611)

  • kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)

  • kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route (CVE-2023-4128, CVE-2023-4206, CVE-2023-4207, CVE-2023-4208)

  • hw: Intel: Gather Data Sampling (GDS) side channel vulnerability (CVE-2022-40982)

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 Real Time7x86_64
Red Hat Enterprise Linux for Real Time for NFV7x86_64

Updated Packages

  • kernel-rt-debuginfo-common-x86_64-3.10.0-1160.105.1.rt56.1256.el7.x86_64.rpm
  • kernel-rt-debug-debuginfo-3.10.0-1160.105.1.rt56.1256.el7.x86_64.rpm
  • kernel-rt-3.10.0-1160.105.1.rt56.1256.el7.x86_64.rpm
  • kernel-rt-debug-kvm-debuginfo-3.10.0-1160.105.1.rt56.1256.el7.x86_64.rpm
  • kernel-rt-kvm-3.10.0-1160.105.1.rt56.1256.el7.x86_64.rpm
  • kernel-rt-trace-3.10.0-1160.105.1.rt56.1256.el7.x86_64.rpm
  • kernel-rt-devel-3.10.0-1160.105.1.rt56.1256.el7.x86_64.rpm
  • kernel-rt-trace-kvm-debuginfo-3.10.0-1160.105.1.rt56.1256.el7.x86_64.rpm
  • kernel-rt-trace-kvm-3.10.0-1160.105.1.rt56.1256.el7.x86_64.rpm
  • kernel-rt-doc-3.10.0-1160.105.1.rt56.1256.el7.noarch.rpm
  • kernel-rt-trace-debuginfo-3.10.0-1160.105.1.rt56.1256.el7.x86_64.rpm
  • kernel-rt-debuginfo-3.10.0-1160.105.1.rt56.1256.el7.x86_64.rpm
  • kernel-rt-debug-3.10.0-1160.105.1.rt56.1256.el7.x86_64.rpm
  • kernel-rt-trace-devel-3.10.0-1160.105.1.rt56.1256.el7.x86_64.rpm
  • kernel-rt-kvm-debuginfo-3.10.0-1160.105.1.rt56.1256.el7.x86_64.rpm
  • kernel-rt-debug-devel-3.10.0-1160.105.1.rt56.1256.el7.x86_64.rpm
  • kernel-rt-debug-kvm-3.10.0-1160.105.1.rt56.1256.el7.x86_64.rpm
  • kernel-rt-3.10.0-1160.105.1.rt56.1256.el7.src.rpm

Fixes

CVEs

References

Additional information