RHSA-2024:3319HighCVSS 7.8

Red Hat Security Advisory: kernel security update

Published
May 23, 2024
Last Modified
August 6, 2026

🔗 CVE IDs covered (2)

CVE-2022-40982 →CVE-2024-1086 →

📋 Description

CVE-2022-40982 — hw: Intel: Gather Data Sampling (GDS) side channel vulnerability CVE-2024-1086 — kernel: nf_tables: use-after-free vulnerability in the nft_verdict_init() function

🎯 Affected products29

  • Red Hat Enterprise Linux Server AUS (v. 7.7)
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.7)
  • bpftool-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • bpftool-debuginfo-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • bpftool-debuginfo-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional AUS (v. 7.7)
  • kernel-0:3.10.0-1062.88.1.el7.src as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • kernel-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • kernel-abi-whitelists-0:3.10.0-1062.88.1.el7.noarch as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • kernel-debug-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • kernel-debug-debuginfo-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • kernel-debug-debuginfo-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional AUS (v. 7.7)
  • kernel-debug-devel-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • kernel-debuginfo-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • kernel-debuginfo-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional AUS (v. 7.7)
  • kernel-debuginfo-common-x86_64-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • kernel-debuginfo-common-x86_64-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional AUS (v. 7.7)
  • kernel-devel-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • kernel-doc-0:3.10.0-1062.88.1.el7.noarch as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • kernel-tools-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • kernel-tools-debuginfo-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • kernel-tools-debuginfo-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional AUS (v. 7.7)
  • kernel-tools-libs-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • kernel-tools-libs-devel-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional AUS (v. 7.7)
  • perf-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • perf-debuginfo-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • perf-debuginfo-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional AUS (v. 7.7)
  • python-perf-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • python-perf-debuginfo-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)
  • python-perf-debuginfo-0:3.10.0-1062.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional AUS (v. 7.7)

✅ Remediation

Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Workaround: The vulnerability can be mitigated by installing the CPU microcode package microcode_ctl version 20230808. Workaround: 1. This flaw can be mitigated by preventing the affected netfilter (nf_tables) kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278. 2. If the module cannot be disabled, on non-containerized deployments of Red Hat Enterprise Linux, the mitigation is to disable user namespaces: ``` # echo "user.max_user_namespaces=0" > /etc/sysctl.d/userns.conf # sysctl -p /etc/sysctl.d/userns.conf ``` On containerized deployments, such as Red Hat OpenShift Container Platform, do not use the second mitigation (disabling user namespaces) as the functionality is needed to be enabled. The first mitigation (blacklisting nf_tables) is still viable for containerized deployments, providing the environment is not using netfilter.

🔗 References (5)