RHSA-2024:4729HighCVSS 7.0

Red Hat Security Advisory: kernel-rt security update

Published
July 23, 2024
Last Modified
November 5, 2026

🔗 CVE IDs covered (2)

CVE-2023-6546 →CVE-2024-21823 →

📋 Description

CVE-2023-6546 — kernel: GSM multiplexing race condition leads to privilege escalation CVE-2024-21823 — kernel: dmaengine/idxd: hardware erratum allows potential security problem with direct access by untrusted application

🎯 Affected products32

  • Red Hat Enterprise Linux NFV TUS (v.8.4)
  • Red Hat Enterprise Linux RT TUS (v.8.4)
  • kernel-rt-0:4.18.0-305.134.1.rt7.210.el8_4.src as a component of Red Hat Enterprise Linux NFV TUS (v.8.4)
  • kernel-rt-0:4.18.0-305.134.1.rt7.210.el8_4.src as a component of Red Hat Enterprise Linux RT TUS (v.8.4)
  • kernel-rt-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV TUS (v.8.4)
  • kernel-rt-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT TUS (v.8.4)
  • kernel-rt-core-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV TUS (v.8.4)
  • kernel-rt-core-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT TUS (v.8.4)
  • kernel-rt-debug-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV TUS (v.8.4)
  • kernel-rt-debug-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT TUS (v.8.4)
  • kernel-rt-debug-core-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV TUS (v.8.4)
  • kernel-rt-debug-core-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT TUS (v.8.4)
  • kernel-rt-debug-debuginfo-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV TUS (v.8.4)
  • kernel-rt-debug-debuginfo-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT TUS (v.8.4)
  • kernel-rt-debug-devel-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV TUS (v.8.4)
  • kernel-rt-debug-devel-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT TUS (v.8.4)
  • kernel-rt-debug-kvm-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV TUS (v.8.4)
  • kernel-rt-debug-modules-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV TUS (v.8.4)
  • kernel-rt-debug-modules-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT TUS (v.8.4)
  • kernel-rt-debug-modules-extra-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV TUS (v.8.4)
  • kernel-rt-debug-modules-extra-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT TUS (v.8.4)
  • kernel-rt-debuginfo-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV TUS (v.8.4)
  • kernel-rt-debuginfo-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT TUS (v.8.4)
  • kernel-rt-debuginfo-common-x86_64-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV TUS (v.8.4)
  • kernel-rt-debuginfo-common-x86_64-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT TUS (v.8.4)
  • kernel-rt-devel-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV TUS (v.8.4)
  • kernel-rt-devel-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT TUS (v.8.4)
  • kernel-rt-kvm-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV TUS (v.8.4)
  • kernel-rt-modules-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV TUS (v.8.4)
  • kernel-rt-modules-0:4.18.0-305.134.1.rt7.210.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT TUS (v.8.4)
  • +2 more not shown

✅ Remediation

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. Workaround: This flaw can be mitigated by preventing the affected `n_gsm` kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278.

🔗 References (5)