RHSA-2023:1091HighCVSS 7.8

Red Hat Security Advisory: kernel security and bug fix update

Published
March 7, 2023
Last Modified
October 14, 2026

🔗 CVE IDs covered (2)

CVE-2022-4378 →CVE-2022-42703 →

📋 Description

CVE-2022-4378 — kernel: stack overflow in do_proc_dointvec and proc_skip_spaces CVE-2022-42703 — kernel: use-after-free related to leaf anon_vma double reuse

🎯 Affected products162

  • Red Hat Enterprise Linux Client (v. 7)
  • Red Hat Enterprise Linux Client Optional (v. 7)
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7)
  • Red Hat Enterprise Linux Server (v. 7)
  • Red Hat Enterprise Linux Server Optional (v. 7)
  • Red Hat Enterprise Linux Workstation (v. 7)
  • Red Hat Enterprise Linux Workstation Optional (v. 7)
  • bpftool-0:3.10.0-1160.88.1.el7.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)
  • bpftool-0:3.10.0-1160.88.1.el7.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)
  • bpftool-0:3.10.0-1160.88.1.el7.s390x as a component of Red Hat Enterprise Linux Server (v. 7)
  • bpftool-0:3.10.0-1160.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
  • bpftool-0:3.10.0-1160.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)
  • bpftool-0:3.10.0-1160.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)
  • bpftool-debuginfo-0:3.10.0-1160.88.1.el7.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)
  • bpftool-debuginfo-0:3.10.0-1160.88.1.el7.ppc64 as a component of Red Hat Enterprise Linux Server Optional (v. 7)
  • bpftool-debuginfo-0:3.10.0-1160.88.1.el7.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)
  • bpftool-debuginfo-0:3.10.0-1160.88.1.el7.ppc64le as a component of Red Hat Enterprise Linux Server Optional (v. 7)
  • bpftool-debuginfo-0:3.10.0-1160.88.1.el7.s390x as a component of Red Hat Enterprise Linux Server (v. 7)
  • bpftool-debuginfo-0:3.10.0-1160.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
  • bpftool-debuginfo-0:3.10.0-1160.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Client Optional (v. 7)
  • bpftool-debuginfo-0:3.10.0-1160.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux ComputeNode Optional (v. 7)
  • bpftool-debuginfo-0:3.10.0-1160.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)
  • bpftool-debuginfo-0:3.10.0-1160.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7)
  • bpftool-debuginfo-0:3.10.0-1160.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)
  • bpftool-debuginfo-0:3.10.0-1160.88.1.el7.x86_64 as a component of Red Hat Enterprise Linux Workstation Optional (v. 7)
  • kernel-0:3.10.0-1160.88.1.el7.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)
  • kernel-0:3.10.0-1160.88.1.el7.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)
  • kernel-0:3.10.0-1160.88.1.el7.s390x as a component of Red Hat Enterprise Linux Server (v. 7)
  • kernel-0:3.10.0-1160.88.1.el7.src as a component of Red Hat Enterprise Linux Client (v. 7)
  • kernel-0:3.10.0-1160.88.1.el7.src as a component of Red Hat Enterprise Linux Server (v. 7)
  • +132 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: A possible workaround is preventing regular users from accessing sysctl files (such as /proc/sys/net/ipv4/tcp_rmem and similar). Also, preventing a user from increasing privileges with commands such as "unshare -rn" (that allows obtaining net namespace privileges required to access /proc/sys/net/ipv4/tcp_rmem). Workaround: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

🔗 References (7)