RHSA-2023:7294HighCVSS 7.0

Red Hat Security Advisory: kernel security update

Published
November 15, 2023
Last Modified
July 30, 2026

🔗 CVE IDs covered (2)

CVE-2023-3609 →CVE-2023-3776 →

📋 Description

CVE-2023-3609 — kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails CVE-2023-3776 — kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function

🎯 Affected products27

  • Red Hat Enterprise Linux Server AUS (v. 7.6)
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.6)
  • bpftool-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • kernel-0:3.10.0-957.108.1.el7.src as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • kernel-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • kernel-abi-whitelists-0:3.10.0-957.108.1.el7.noarch as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • kernel-debug-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • kernel-debug-debuginfo-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • kernel-debug-debuginfo-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional AUS (v. 7.6)
  • kernel-debug-devel-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • kernel-debuginfo-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • kernel-debuginfo-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional AUS (v. 7.6)
  • kernel-debuginfo-common-x86_64-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • kernel-debuginfo-common-x86_64-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional AUS (v. 7.6)
  • kernel-devel-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • kernel-doc-0:3.10.0-957.108.1.el7.noarch as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • kernel-tools-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • kernel-tools-debuginfo-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • kernel-tools-debuginfo-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional AUS (v. 7.6)
  • kernel-tools-libs-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • kernel-tools-libs-devel-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional AUS (v. 7.6)
  • perf-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • perf-debuginfo-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • perf-debuginfo-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional AUS (v. 7.6)
  • python-perf-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • python-perf-debuginfo-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.6)
  • python-perf-debuginfo-0:3.10.0-957.108.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional AUS (v. 7.6)

✅ 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: To mitigate this issue, prevent module cls_u32 from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically. Workaround: To mitigate this issue, prevent module cls_fw from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.

🔗 References (5)