RHSA-2023:4967HighCVSS 7.8

Red Hat Security Advisory: kpatch-patch security update

Published
September 5, 2023
Last Modified
October 15, 2026

🔗 CVE IDs covered (6)

CVE-2023-3390 →CVE-2023-4004 →CVE-2023-35001 →CVE-2023-35788 →CVE-2023-1829 →CVE-2023-3090 →

📋 Description

CVE-2023-1829 — kernel: Use-after-free vulnerability in the Linux Kernel traffic control index filter 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-2023-4004 — kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() 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()

🎯 Affected products43

  • Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_76_1-0:1-5.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_76_1-0:1-5.el8_4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_76_1-0:1-5.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_76_1-debuginfo-0:1-5.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_76_1-debuginfo-0:1-5.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_76_1-debugsource-0:1-5.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_76_1-debugsource-0:1-5.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_82_1-0:1-4.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_82_1-0:1-4.el8_4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_82_1-0:1-4.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_82_1-debuginfo-0:1-4.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_82_1-debuginfo-0:1-4.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_82_1-debugsource-0:1-4.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_82_1-debugsource-0:1-4.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_86_2-0:1-3.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_86_2-0:1-3.el8_4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_86_2-0:1-3.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_86_2-debuginfo-0:1-3.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_86_2-debuginfo-0:1-3.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_86_2-debugsource-0:1-3.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_86_2-debugsource-0:1-3.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_88_1-0:1-3.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_88_1-0:1-3.el8_4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_88_1-0:1-3.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_88_1-debuginfo-0:1-3.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_88_1-debuginfo-0:1-3.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_88_1-debugsource-0:1-3.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_88_1-debugsource-0:1-3.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_91_1-0:1-2.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • +13 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 Workaround: To mitigate this issue, prevent the module cls_tcindex from being loaded. Please see https://access.redhat.com/solutions/41278 on how to blacklist a kernel module to prevent it from loading automatically. 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: 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 (9)