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Fencer Vulns
high 7.8

CVE-2023-6931 json

Out-of-bounds write in Linux kernel's Performance Events system component

published 2023-12-19 2 y ago modified 2026-10-14 25 d ago also EUVD-2023-59129

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

A heap out-of-bounds write vulnerability in the Linux kernel's Performance Events system component can be exploited to achieve local privilege escalation.

A perf_event's read_size can overflow, leading to an heap out-of-bounds increment or write in perf_read_group().

We recommend upgrading past commit 382c27f4ed28f803b1f1473ac2d8db0afc795a1b.

Patch / fix

  • Linux Linux Kernel 4.19.302, 5.4.264, 5.10.204, 5.15.143, 6.1.68, 6.6.7, 6.7.0
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem V1.1, V1.1.1
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • linux Debian 12 6.1.69-1
  • linux Debian 14, Debian 13 6.6.8-1

debian advisories DEBIAN-CVE-2023-6931

  • linux Ubuntu 20.04 LTS 5.4.0-170.188
  • linux Ubuntu 22.04 LTS 5.15.0-92.102
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1117.127
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1052.57
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1121.130
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1049.57
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1049.54
  • linux-ibm Ubuntu 20.04 LTS 5.4.0-1064.69

ubuntu advisories UBUNTU-CVE-2023-6931

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 9 5.14.0-427.13.1.el9_4
  • rv RHEL 9 5.14.0-427.13.1.el9_4
  • perf RHEL 9 5.14.0-427.13.1.el9_4
  • rtla RHEL 9 5.14.0-427.13.1.el9_4
  • bpftool RHEL 9 7.3.0-427.13.1.el9_4
  • libperf RHEL 9 5.14.0-427.13.1.el9_4
  • kernel-rt RHEL 9 5.14.0-427.13.1.el9_4
  • kernel-64k RHEL 9 5.14.0-427.13.1.el9_4

red hat advisories RHSA-2024:2394RHSA-2024:1404RHSA-2024:1018RHSA-2024:1019RHSA-2024:0930RHSA-2024:1836

  • dtb-aarch64 openSUSE Leap 15.5 5.14.21-150500.55.44.1
  • kernel-64kb SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.44.1
  • kernel-syms SLE Module for Development Tools 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.44.1
  • kernel-obs-qa openSUSE Leap 15.5 5.14.21-150500.55.44.1
  • kernel-source SLE Module for Development Tools 15 SP5, SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.44.1
  • kernel-default SLE Workstation Extension 15 SP5, SLE Module for Legacy 15 SP5, SLE Module for Basesystem 15 SP5 +4 more 5.14.21-150500.55.44.1
  • kernel-kvmsmall openSUSE Leap 15.5 5.14.21-150500.55.44.1
  • kernel-zfcpdump SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.44.1

suse advisories SUSE-SU-2024:2205-1SUSE-SU-2024:2202-1SUSE-SU-2024:2166-1SUSE-SU-2024:2145-1SUSE-SU-2024:2115-1SUSE-SU-2024:2099-1

  • kernel AlmaLinux 9 5.14.0-427.13.1.el9_4
  • rv AlmaLinux 9 5.14.0-427.13.1.el9_4
  • perf AlmaLinux 9 5.14.0-427.13.1.el9_4
  • rtla AlmaLinux 9 5.14.0-427.13.1.el9_4
  • bpftool AlmaLinux 9 7.3.0-427.13.1.el9_4
  • libperf AlmaLinux 9 5.14.0-427.13.1.el9_4
  • kernel-rt AlmaLinux 9 5.14.0-427.13.1.el9_4
  • kernel-64k AlmaLinux 9 5.14.0-427.13.1.el9_4

almalinux advisories ALSA-2024:2394ALSA-2024:1607

  • kernel Rocky Linux 8 4.18.0-513.24.1.el8_9.cloud.0.1
  • kernel-rt Rocky Linux 8 4.18.0-513.24.1.rt7.326.el8_9
  • kernel Rocky Linux 8 4.18.0-513.24.1.el8_9

rocky linux advisories RXSA-2024:1607RLSA-2024:1614RLSA-2024:1607

  • kernel CBL-Mariner 2.0 5.15.143.1-1
  • kernel Azure Linux 3.0 6.6.35.1-4

azure linux advisories AZL-32264AZL-34869

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-2023-6931 updated cvss 7.0

kernel: Out of boundary write in perf_read_group() as result of overflow a perf_event's read_size

  • Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
    affected: workaround, no fix planned “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid”
  • 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 “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid”
  • Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-513.24.1.el8_9, kernel-debuginfo-common-aarch64 4.18.0-513.24.1.el8_9, kernel-debuginfo-common-ppc64le 4.18.0-513.24.1.el8_9
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:1607
  • Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-debuginfo-common-x86_64 4.18.0-372.93.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.93.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.93.1.el8_6
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:0930
  • Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-debuginfo-common-x86_64 4.18.0-477.51.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.51.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.51.1.el8_8
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:1404
  • Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-debuginfo-common-s390x 5.14.0-70.97.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.97.1.el9_0, kernel-debuginfo-common-aarch64 5.14.0-70.97.1.el9_0, kernel-debuginfo-common-ppc64le 5.14.0-70.97.1.el9_0
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:1836
  • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.55.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.55.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.55.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.55.1.el9_2
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:1018
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-427.13.1.el9_4, perf 5.14.0-427.13.1.el9_4, rtla 5.14.0-427.13.1.el9_4, kernel-devel-matched 5.14.0-427.13.1.el9_4, kernel-64k-devel-matched 5.14.0-427.13.1.el9_4, kernel-debug-devel-matched 5.14.0-427.13.1.el9_4, +6 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:2394
show 20 more
  • Red Hat Enterprise Linux AppStream EUS (v.9.0) perf 5.14.0-70.97.1.el9_0, kernel-devel-matched 5.14.0-70.97.1.el9_0, kernel-debug-devel-matched 5.14.0-70.97.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.97.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.97.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.97.1.el9_0, +2 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:1836
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.55.1.el9_2, rtla 5.14.0-284.55.1.el9_2, kernel-devel-matched 5.14.0-284.55.1.el9_2, kernel-64k-devel-matched 5.14.0-284.55.1.el9_2, kernel-debug-devel-matched 5.14.0-284.55.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.55.1.el9_2, +5 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:1018
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-513.24.1.el8_9, kernel 4.18.0-513.24.1.el8_9, bpftool 4.18.0-513.24.1.el8_9, kernel-core 4.18.0-513.24.1.el8_9, kernel-tools 4.18.0-513.24.1.el8_9, python3-perf 4.18.0-513.24.1.el8_9, +15 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:1607
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.3.0-427.13.1.el9_4, kernel 5.14.0-427.13.1.el9_4, kernel-64k 5.14.0-427.13.1.el9_4, kernel-core 5.14.0-427.13.1.el9_4, kernel-tools 5.14.0-427.13.1.el9_4, python3-perf 5.14.0-427.13.1.el9_4, +28 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:2394
  • Red Hat Enterprise Linux BaseOS EUS (v.8.6) perf 4.18.0-372.93.1.el8_6, kernel 4.18.0-372.93.1.el8_6, bpftool 4.18.0-372.93.1.el8_6, kernel-core 4.18.0-372.93.1.el8_6, kernel-tools 4.18.0-372.93.1.el8_6, python3-perf 4.18.0-372.93.1.el8_6, +15 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:0930
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8) perf 4.18.0-477.51.1.el8_8, kernel 4.18.0-477.51.1.el8_8, bpftool 4.18.0-477.51.1.el8_8, kernel-core 4.18.0-477.51.1.el8_8, kernel-tools 4.18.0-477.51.1.el8_8, python3-perf 4.18.0-477.51.1.el8_8, +15 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:1404
  • Red Hat Enterprise Linux BaseOS EUS (v.9.0) kernel 5.14.0-70.97.1.el9_0, bpftool 5.14.0-70.97.1.el9_0, kernel-core 5.14.0-70.97.1.el9_0, kernel-tools 5.14.0-70.97.1.el9_0, python3-perf 5.14.0-70.97.1.el9_0, kernel-modules 5.14.0-70.97.1.el9_0, +14 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:1836
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.55.1.el9_2, kernel 5.14.0-284.55.1.el9_2, kernel-64k 5.14.0-284.55.1.el9_2, kernel-core 5.14.0-284.55.1.el9_2, kernel-tools 5.14.0-284.55.1.el9_2, python3-perf 5.14.0-284.55.1.el9_2, +28 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:1018
  • Red Hat Enterprise Linux CRB (v. 9) libperf 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.13.1.el9_4
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:2394
  • Red Hat Enterprise Linux for Real Time (v. 8) kernel-rt 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-core 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-modules 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-debug-core 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-debug-modules 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-modules-extra 4.18.0-513.24.1.rt7.326.el8_9, +2 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:1614
  • Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-427.13.1.el9_4, kernel-rt-kvm 5.14.0-427.13.1.el9_4, kernel-rt-core 5.14.0-427.13.1.el9_4, kernel-rt-modules 5.14.0-427.13.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.13.1.el9_4, kernel-rt-debug-core 5.14.0-427.13.1.el9_4, +6 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:2394
  • Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt 5.14.0-70.97.1.rt21.169.el9_0, kernel-rt-core 5.14.0-70.97.1.rt21.169.el9_0, kernel-rt-modules 5.14.0-70.97.1.rt21.169.el9_0, kernel-rt-debug-core 5.14.0-70.97.1.rt21.169.el9_0, kernel-rt-debug-modules 5.14.0-70.97.1.rt21.169.el9_0, kernel-rt-modules-extra 5.14.0-70.97.1.rt21.169.el9_0, +2 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:1840
  • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-core 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-modules 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-debug-core 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-modules-core 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-debug-modules 5.14.0-284.55.1.rt14.340.el9_2, +4 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:1019
  • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-kvm 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-core 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-modules 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-debug-kvm 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-debug-core 4.18.0-513.24.1.rt7.326.el8_9, +4 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:1614
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt 5.14.0-70.97.1.rt21.169.el9_0, kernel-rt-kvm 5.14.0-70.97.1.rt21.169.el9_0, kernel-rt-core 5.14.0-70.97.1.rt21.169.el9_0, kernel-rt-modules 5.14.0-70.97.1.rt21.169.el9_0, kernel-rt-debug-kvm 5.14.0-70.97.1.rt21.169.el9_0, kernel-rt-debug-core 5.14.0-70.97.1.rt21.169.el9_0, +4 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:1840
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-kvm 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-core 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-modules 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-debug-kvm 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-debug-core 5.14.0-284.55.1.rt14.340.el9_2, +6 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:1019
  • Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-427.13.1.el9_4, kernel-rt-core 5.14.0-427.13.1.el9_4, kernel-rt-modules 5.14.0-427.13.1.el9_4, kernel-rt-debug-core 5.14.0-427.13.1.el9_4, kernel-rt-modules-core 5.14.0-427.13.1.el9_4, kernel-rt-debug-modules 5.14.0-427.13.1.el9_4, +4 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:2394
  • Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.93.1.el8_6, kernel-debuginfo-common-x86_64 4.18.0-372.93.1.el8_6
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:0930
  • Red Hat RHOL 5.7 for RHEL 8 openshift-logging/vector-rhel8 v0.28.1-57, openshift-logging/kibana6-rhel8 v6.8.1-431, openshift-logging/fluentd-rhel8 v1.14.6-215, openshift-logging/eventrouter-rhel8 v0.4.0-248, openshift-logging/logging-loki-rhel8 v2.9.6-15, openshift-logging/loki-rhel8-operator v5.7.13-12, +12 more
    fixed: vendor fix “It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with: cat /proc/sys/kernel/perf_event_paranoid” RHSA-2024:2093
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-doc 5.14.0-284.55.1.el9_2
    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-24-102-01 updated cvss 7.8

Siemens SIMATIC S7-1500 TM MFP

  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
    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-25-226-15 updated

Siemens SINEC OS

  • Siemens RUGGEDCOM RST2428P (6GK6242-6PA00) Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family
    not affected

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

cisa ICSA-23-348-10 updated cvss 7.8

Siemens SIMATIC S7-1500

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.0, < 3.1.5
    affected: fixed in V3.1.5, mitigation support.industry.siemens.com

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

cisa ICSA-23-166-11 updated cvss 7.8

Siemens SIMATIC S7-1500 TM MFP Linux Kernel

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

Exploit prediction

0.71% chance of exploitation in the next 30 days, higher than 53% 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
NVD 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Linux Linux Kernel
  • Siemens RUGGEDCOM RST2428P
  • Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family
  • Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness
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.