RHSA-2023:5244HighCVSS 8.8

Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Published
September 19, 2023
Last Modified
October 15, 2026

🔗 CVE IDs covered (10)

CVE-2023-2002 →CVE-2023-3090 →CVE-2023-3390 →CVE-2023-3776 →CVE-2023-4004 →CVE-2023-20593 →CVE-2023-35001 →CVE-2023-35788 →CVE-2023-1637 →CVE-2023-44466 →

📋 Description

CVE-2023-1637 — kernel: save/restore speculative MSRs during S3 suspend/resume CVE-2023-2002 — Kernel: bluetooth: Unauthorized management command execution CVE-2023-3090 — kernel: ipvlan: out-of-bounds write caused by unclear skb->cb CVE-2023-3390 — kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests CVE-2023-3776 — kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function CVE-2023-4004 — kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() CVE-2023-20593 — hw: amd: Cross-Process Information Leak CVE-2023-35001 — kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() CVE-2023-35788 — kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() CVE-2023-44466 — kernel: buffer overflow in ceph file net/ceph/messenger_v2.c

🎯 Affected products122

  • Red Hat Enterprise Linux BaseOS (v. 8)
  • Red Hat Enterprise Linux CRB (v. 8)
  • bpftool-0:4.18.0-477.27.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • bpftool-0:4.18.0-477.27.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • bpftool-0:4.18.0-477.27.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • bpftool-0:4.18.0-477.27.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • bpftool-debuginfo-0:4.18.0-477.27.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • bpftool-debuginfo-0:4.18.0-477.27.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux CRB (v. 8)
  • bpftool-debuginfo-0:4.18.0-477.27.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • bpftool-debuginfo-0:4.18.0-477.27.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux CRB (v. 8)
  • bpftool-debuginfo-0:4.18.0-477.27.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • bpftool-debuginfo-0:4.18.0-477.27.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • bpftool-debuginfo-0:4.18.0-477.27.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux CRB (v. 8)
  • kernel-0:4.18.0-477.27.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kernel-0:4.18.0-477.27.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kernel-0:4.18.0-477.27.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kernel-0:4.18.0-477.27.1.el8_8.src as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kernel-0:4.18.0-477.27.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kernel-abi-stablelists-0:4.18.0-477.27.1.el8_8.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kernel-core-0:4.18.0-477.27.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kernel-core-0:4.18.0-477.27.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kernel-core-0:4.18.0-477.27.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kernel-core-0:4.18.0-477.27.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kernel-debug-0:4.18.0-477.27.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kernel-debug-0:4.18.0-477.27.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kernel-debug-0:4.18.0-477.27.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kernel-debug-0:4.18.0-477.27.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kernel-debug-core-0:4.18.0-477.27.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kernel-debug-core-0:4.18.0-477.27.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kernel-debug-core-0:4.18.0-477.27.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • +92 more not shown

✅ 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 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. Workaround: This flaw can be mitigated by preventing the affected `ipvlan` kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278. 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. Workaround: This flaw can be mitigated by preventing the affected netfilter kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278. Workaround: To mitigate this issue, it is possible to prevent the affected code from being loaded by blacklisting the kernel netfilter module. For instructions relating to how to blacklist a kernel module refer to: https://access.redhat.com/solutions/41278 Workaround: This flaw can be mitigated by preventing the affected `cls_flower` kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278.

🔗 References (11)