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Fencer Vulns
high 7.8

CVE-2026-23111 json

netfilter: nf_tables: fix inverted genmask check in nft_map_catchall_activate()

published 2026-02-13 8 mo ago modified 2026-10-15 25 d ago also EUVD-2026-6170

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 67%
public exploits
0
none known

Summary

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_tables: fix inverted genmask check in nft_map_catchall_activate()

nft_map_catchall_activate() has an inverted element activity check compared to its non-catchall counterpart nft_mapelem_activate() and compared to what is logically required.

nft_map_catchall_activate() is called from the abort path to re-activate catchall map elements that were deactivated during a failed transaction. It should skip elements that are already active (they don't need re-activation) and process elements that are inactive (they need to be restored). Instead, the current code does the opposite: it skips inactive elements and processes active ones.

Compare the non-catchall activate callback, which is correct:

nft_mapelem_activate(): if (nft_set_elem_active(ext, iter->genmask)) return 0; /* skip active, process inactive */

With the buggy catchall version:

nft_map_catchall_activate(): if (!nft_set_elem_active(ext, genmask)) continue; /* skip inactive, process active */

The consequence is that when a DELSET operation is aborted, nft_setelem_data_activate() is never called for the catchall element. For NFT_GOTO verdict elements, this means nft_data_hold() is never called to restore the chain->use reference count. Each abort cycle permanently decrements chain->use. Once chain->use reaches zero, DELCHAIN succeeds and frees the chain while catchall verdict elements still reference it, resulting in a use-after-free.

This is exploitable for local privilege escalation from an unprivileged user via user namespaces + nftables on distributions that enable CONFIG_USER_NS and CONFIG_NF_TABLES.

Fix by removing the negation so the check matches nft_mapelem_activate(): skip active elements, process inactive ones.

Patch / fix

  • Linux Linux 4.20, 5.5, 5.11, 5.15.200, 6.1.163, 6.4, 6.6.124, 6.12.70, 6.18.10, 6.19
  • Siemens RUGGEDCOM RST2428P V4.0
  • Red Hat Red Hat Enterprise Linux 10 0:6.12.0-211.7.1.el10_2
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:6.12.0-55.70.1.el10_0
  • Red Hat Red Hat Enterprise Linux 9 0:5.14.0-611.47.1.el9_7
  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:5.14.0-427.121.1.el9_4
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:5.14.0-570.108.1.el9_6
  • linux Debian 12 6.1.164-1
  • linux Debian 13 6.12.73-1
  • linux Debian 14 6.18.10-1

debian advisories DEBIAN-CVE-2026-23111

  • linux Ubuntu 24.04 LTS 6.8.0-107.107
  • linux Ubuntu 25.10 6.17.0-20.20
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1051.54
  • linux-aws Ubuntu 25.10 6.17.0-1010.10
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1053.56
  • linux-gcp Ubuntu 25.10 6.17.0-1010.10
  • linux-gke Ubuntu 24.04 LTS 6.8.0-1049.54
  • linux-ibm Ubuntu 24.04 LTS 6.8.0-1050.50

ubuntu advisories UBUNTU-CVE-2026-23111

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel RHEL 10.2 6.12.0-211.7.1.el10_2
  • rv RHEL 10.2 6.12.0-211.7.1.el10_2
  • perf RHEL 10.2 6.12.0-211.7.1.el10_2
  • rtla RHEL 10.2 6.12.0-211.7.1.el10_2
  • libperf RHEL 10.2 6.12.0-211.7.1.el10_2
  • kernel-rt RHEL 10.2 6.12.0-211.7.1.el10_2
  • kernel-64k RHEL 10.2 6.12.0-211.7.1.el10_2
  • kernel-core RHEL 10.2 6.12.0-211.7.1.el10_2

red hat advisories RHSA-2026:62641RHSA-2026:62639RHSA-2026:18134RHSA-2026:10996RHSA-2026:10108RHSA-2026:9112

  • kernel-livepatch-SLE16_Update_2 SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 5-160000.1.1
  • kernel-livepatch-SLE16_Update_3 SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 4-160000.1.1
  • kernel-livepatch-SLE16_Update_1 SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 7-160000.1.1
  • kernel-livepatch-SLE16_Update_5 SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 2-160000.1.1
  • kernel-livepatch-SLE16_Update_0 SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 9-160000.4.3
  • kernel-livepatch-SLE16_Update_4 SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 3-160000.1.1
  • kernel-livepatch-MICRO-6-0-RT_Update_6 Linux Micro 6.1, Linux Micro 6.0 15-3.1
  • kernel-livepatch-MICRO-6-0-RT_Update_5 Linux Micro 6.1, Linux Micro 6.0 17-1.1

suse advisories SUSE-SU-2026:21102-1SUSE-SU-2026:21221-1SUSE-SU-2026:21100-1SUSE-SU-2026:21220-1SUSE-SU-2026:21099-1SUSE-SU-2026:21219-1

  • kernel-rt openSUSE Leap 16.0 6.12.0-160000.27.1
  • dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.27.1
  • kernel-64kb openSUSE Leap 16.0 6.12.0-160000.27.1
  • kernel-syms openSUSE Leap 16.0 6.12.0-160000.27.1
  • kernel-azure openSUSE Leap 16.0 6.12.0-160000.27.1
  • kernel-obs-qa openSUSE Leap 16.0 6.12.0-160000.27.1
  • kernel-source openSUSE Leap 16.0 6.12.0-160000.27.1
  • kernel-default openSUSE Leap 16.0 6.12.0-160000.27.1

opensuse advisories openSUSE-SU-2026:20416-1

  • kernel AlmaLinux 10 6.12.0-211.7.1.el10_2
  • rv AlmaLinux 10 6.12.0-211.7.1.el10_2
  • perf AlmaLinux 10 6.12.0-211.7.1.el10_2
  • rtla AlmaLinux 10 6.12.0-211.7.1.el10_2
  • libperf AlmaLinux 10 6.12.0-211.7.1.el10_2
  • kernel-rt AlmaLinux 10 6.12.0-211.7.1.el10_2
  • kernel-64k AlmaLinux 10 6.12.0-211.7.1.el10_2
  • kernel-core AlmaLinux 10 6.12.0-211.7.1.el10_2

almalinux advisories ALSA-2026:18134ALSA-2026:6570

  • kernel Rocky Linux 9 5.14.0-611.47.1.el9_7

rocky linux advisories RLSA-2026:6570

  • kernel Azure Linux 3.0 6.6.126.1-1

azure linux advisories AZL-77483

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-23111 updated cvss 7.8

kernel: Kernel: Privilege escalation or denial of service in nf_tables via inverted element activity check

  • Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 more
    affected: workaround, no fix available “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.”
  • Red Hat CodeReady Linux Builder EUS (v.9.4) libperf 5.14.0-427.121.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.121.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.121.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.121.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.121.1.el9_4
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:10108
  • Red Hat CodeReady Linux Builder EUS (v.9.6) libperf 5.14.0-570.108.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.108.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.108.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.108.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.108.1.el9_6
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:9112
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-611.47.1.el9_7, perf 5.14.0-611.47.1.el9_7, rtla 5.14.0-611.47.1.el9_7, python3-perf 5.14.0-611.47.1.el9_7, kernel-devel-matched 5.14.0-611.47.1.el9_7, kernel-64k-devel-matched 5.14.0-611.47.1.el9_7, +7 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:6570
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-211.7.1.el10_2, perf 6.12.0-211.7.1.el10_2, rtla 6.12.0-211.7.1.el10_2, python3-perf 6.12.0-211.7.1.el10_2, kernel-devel-matched 6.12.0-211.7.1.el10_2, kernel-64k-devel-matched 6.12.0-211.7.1.el10_2, +7 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:18134
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) rv 6.12.0-55.70.1.el10_0, perf 6.12.0-55.70.1.el10_0, rtla 6.12.0-55.70.1.el10_0, python3-perf 6.12.0-55.70.1.el10_0, kernel-devel-matched 6.12.0-55.70.1.el10_0, kernel-64k-devel-matched 6.12.0-55.70.1.el10_0, +7 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:10996
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) rv 5.14.0-427.121.1.el9_4, perf 5.14.0-427.121.1.el9_4, rtla 5.14.0-427.121.1.el9_4, kernel-devel-matched 5.14.0-427.121.1.el9_4, kernel-64k-devel-matched 5.14.0-427.121.1.el9_4, kernel-debug-devel-matched 5.14.0-427.121.1.el9_4, +6 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:10108
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) rv 5.14.0-570.108.1.el9_6, perf 5.14.0-570.108.1.el9_6, rtla 5.14.0-570.108.1.el9_6, python3-perf 5.14.0-570.108.1.el9_6, kernel-devel-matched 5.14.0-570.108.1.el9_6, kernel-64k-devel-matched 5.14.0-570.108.1.el9_6, +7 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:9112
show 20 more
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-611.47.1.el9_7, kernel-64k 5.14.0-611.47.1.el9_7, kernel-core 5.14.0-611.47.1.el9_7, kernel-tools 5.14.0-611.47.1.el9_7, kernel-modules 5.14.0-611.47.1.el9_7, kernel-64k-core 5.14.0-611.47.1.el9_7, +27 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:6570
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-211.7.1.el10_2, kernel-64k 6.12.0-211.7.1.el10_2, kernel-core 6.12.0-211.7.1.el10_2, kernel-tools 6.12.0-211.7.1.el10_2, kernel-modules 6.12.0-211.7.1.el10_2, kernel-64k-core 6.12.0-211.7.1.el10_2, +28 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:18134
  • Red Hat Enterprise Linux BaseOS E4S (v.9.4) kpatch-patch-5_14_0-427_126_1 1-9.el9_4, kpatch-patch-5_14_0-427_68_2 1-21.el9_4, kpatch-patch-5_14_0-427_84_1 1-16.el9_4, kpatch-patch-5_14_0-427_100_1 1-14.el9_4, kpatch-patch-5_14_0-427_113_1 1-12.el9_4
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:62639
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel 6.12.0-55.70.1.el10_0, kernel-64k 6.12.0-55.70.1.el10_0, kernel-core 6.12.0-55.70.1.el10_0, kernel-tools 6.12.0-55.70.1.el10_0, kernel-modules 6.12.0-55.70.1.el10_0, kernel-64k-core 6.12.0-55.70.1.el10_0, +27 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:10996
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool 7.3.0-427.121.1.el9_4, kernel 5.14.0-427.121.1.el9_4, kernel-64k 5.14.0-427.121.1.el9_4, kernel-core 5.14.0-427.121.1.el9_4, kernel-tools 5.14.0-427.121.1.el9_4, python3-perf 5.14.0-427.121.1.el9_4, +28 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:10108
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel 5.14.0-570.108.1.el9_6, kernel-64k 5.14.0-570.108.1.el9_6, kernel-core 5.14.0-570.108.1.el9_6, kernel-tools 5.14.0-570.108.1.el9_6, kernel-modules 5.14.0-570.108.1.el9_6, kernel-64k-core 5.14.0-570.108.1.el9_6, +32 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:9112
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-611.47.1.el9_7, kernel-debuginfo-common-s390x 5.14.0-611.47.1.el9_7, kernel-debuginfo-common-x86_64 5.14.0-611.47.1.el9_7, kernel-debuginfo-common-aarch64 5.14.0-611.47.1.el9_7, kernel-debuginfo-common-ppc64le 5.14.0-611.47.1.el9_7
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:6570
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-211.7.1.el10_2, kernel-debuginfo-common-s390x 6.12.0-211.7.1.el10_2, kernel-debuginfo-common-x86_64 6.12.0-211.7.1.el10_2, kernel-debuginfo-common-aarch64 6.12.0-211.7.1.el10_2, kernel-debuginfo-common-ppc64le 6.12.0-211.7.1.el10_2
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:18134
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libperf 6.12.0-55.70.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-55.70.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-55.70.1.el10_0, kernel-debuginfo-common-aarch64 6.12.0-55.70.1.el10_0, kernel-debuginfo-common-ppc64le 6.12.0-55.70.1.el10_0
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:10996
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-611.47.1.el9_7, kernel-rt-64k 5.14.0-611.47.1.el9_7, kernel-rt-core 5.14.0-611.47.1.el9_7, kernel-rt-modules 5.14.0-611.47.1.el9_7, kernel-rt-64k-core 5.14.0-611.47.1.el9_7, kernel-rt-debug-core 5.14.0-611.47.1.el9_7, +14 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:6570
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-211.7.1.el10_2, kernel-rt-64k 6.12.0-211.7.1.el10_2, kernel-rt-core 6.12.0-211.7.1.el10_2, kernel-rt-modules 6.12.0-211.7.1.el10_2, kernel-rt-64k-core 6.12.0-211.7.1.el10_2, kernel-rt-debug-core 6.12.0-211.7.1.el10_2, +14 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:18134
  • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt 6.12.0-55.70.1.el10_0, kernel-rt-64k 6.12.0-55.70.1.el10_0, kernel-rt-core 6.12.0-55.70.1.el10_0, kernel-rt-modules 6.12.0-55.70.1.el10_0, kernel-rt-64k-core 6.12.0-55.70.1.el10_0, kernel-rt-debug-core 6.12.0-55.70.1.el10_0, +14 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:10996
  • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt 5.14.0-427.121.1.el9_4, kernel-rt-core 5.14.0-427.121.1.el9_4, kernel-rt-modules 5.14.0-427.121.1.el9_4, kernel-rt-debug-core 5.14.0-427.121.1.el9_4, kernel-rt-modules-core 5.14.0-427.121.1.el9_4, kernel-rt-debug-modules 5.14.0-427.121.1.el9_4, +4 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:10108
  • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt 5.14.0-570.108.1.el9_6, kernel-rt-64k 5.14.0-570.108.1.el9_6, kernel-rt-core 5.14.0-570.108.1.el9_6, kernel-rt-modules 5.14.0-570.108.1.el9_6, kernel-rt-64k-core 5.14.0-570.108.1.el9_6, kernel-rt-debug-core 5.14.0-570.108.1.el9_6, +14 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:9112
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-611.47.1.el9_7, kernel-rt-core 5.14.0-611.47.1.el9_7, kernel-rt-modules 5.14.0-611.47.1.el9_7, kernel-rt-debug-core 5.14.0-611.47.1.el9_7, kernel-rt-modules-core 5.14.0-611.47.1.el9_7, kernel-rt-debug-modules 5.14.0-611.47.1.el9_7, +4 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:6570
  • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-211.7.1.el10_2, kernel-rt-core 6.12.0-211.7.1.el10_2, kernel-rt-modules 6.12.0-211.7.1.el10_2, kernel-rt-debug-core 6.12.0-211.7.1.el10_2, kernel-rt-modules-core 6.12.0-211.7.1.el10_2, kernel-rt-debug-modules 6.12.0-211.7.1.el10_2, +4 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:18134
  • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt 6.12.0-55.70.1.el10_0, kernel-rt-kvm 6.12.0-55.70.1.el10_0, kernel-rt-core 6.12.0-55.70.1.el10_0, kernel-rt-modules 6.12.0-55.70.1.el10_0, kernel-rt-debug-kvm 6.12.0-55.70.1.el10_0, kernel-rt-debug-core 6.12.0-55.70.1.el10_0, +6 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:10996
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt 5.14.0-427.121.1.el9_4, kernel-rt-kvm 5.14.0-427.121.1.el9_4, kernel-rt-core 5.14.0-427.121.1.el9_4, kernel-rt-modules 5.14.0-427.121.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.121.1.el9_4, kernel-rt-debug-core 5.14.0-427.121.1.el9_4, +6 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:10108
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt 5.14.0-570.108.1.el9_6, kernel-rt-kvm 5.14.0-570.108.1.el9_6, kernel-rt-core 5.14.0-570.108.1.el9_6, kernel-rt-modules 5.14.0-570.108.1.el9_6, kernel-rt-debug-kvm 5.14.0-570.108.1.el9_6, kernel-rt-debug-core 5.14.0-570.108.1.el9_6, +6 more
    fixed: vendor fix “To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2026:9112
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-26-295-11 updated cvss 7.8

Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.7 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.7 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.7 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.7 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.7
    affected: mitigation, no fix available

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-26-209-04 updated cvss 7.8

Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.6 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.6 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.6 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.6 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.6
    affected: mitigation, no fix available

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
5 mo ago

Exploit prediction

1.15% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Linux Linux
  • Siemens RUGGEDCOM RST2428P
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8

Classification

Weakness
  • CWE-416 Use After Free
  • CWE-672 Operation on a Resource after Expiration or Release
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.