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Fencer Vulns
high 7.8

CVE-2025-39697 json

NFS: Fix a race when updating an existing write

published 2025-09-05 14 mo ago modified 2026-10-19 20 d ago also EUVD-2025-31528

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 5%
public exploits
0
none known

Summary

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

NFS: Fix a race when updating an existing write

After nfs_lock_and_join_requests() tests for whether the request is still attached to the mapping, nothing prevents a call to nfs_inode_remove_request() from succeeding until we actually lock the page group. The reason is that whoever called nfs_inode_remove_request() doesn't necessarily have a lock on the page group head.

So in order to avoid races, let's take the page group lock earlier in nfs_lock_and_join_requests(), and hold it across the removal of the request in nfs_inode_remove_request().

Patch / fix

  • Linux Linux 5.10.242, 5.15.191, 6.1.150, 6.6.104, 6.12.44, 6.16.4, 6.17
  • Siemens SIMATIC CN 4100 V5.0
  • linux Debian 12 6.1.153-1
  • linux Debian 13 6.12.48-1
  • linux Debian 14 6.16.5-1

debian advisories DEBIAN-CVE-2025-39697

  • linux Ubuntu 22.04 LTS 5.15.0-163.173
  • linux Ubuntu 24.04 LTS 6.8.0-106.106
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1097.104
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1050.53
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1097.106
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1052.55
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1093.99
  • linux-gke Ubuntu 24.04 LTS 6.8.0-1048.53

ubuntu advisories UBUNTU-CVE-2025-39697

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-rt RHEL 8 4.18.0-553.85.1.rt7.426.el8_10
  • kernel-rt-kvm RHEL 8 4.18.0-553.85.1.rt7.426.el8_10
  • kernel-rt-core RHEL 8 4.18.0-553.85.1.rt7.426.el8_10
  • kernel-rt-modules RHEL 8 4.18.0-553.85.1.rt7.426.el8_10
  • kernel-rt-debug-kvm RHEL 8 4.18.0-553.85.1.rt7.426.el8_10
  • kernel-rt-debug-core RHEL 8 4.18.0-553.85.1.rt7.426.el8_10
  • kernel-rt-debug-modules RHEL 8 4.18.0-553.85.1.rt7.426.el8_10
  • kernel-rt-modules-extra RHEL 8 4.18.0-553.85.1.rt7.426.el8_10

red hat advisories RHSA-2026:0804RHSA-2025:23445RHSA-2025:22998RHSA-2025:22752RHSA-2025:22006RHSA-2025:21920

  • kernel-rt Real Time Module 15 SP6, openSUSE Leap 15.6 6.4.0-150600.10.58.1
  • kernel-syms-rt Real Time Module 15 SP6, openSUSE Leap 15.6 6.4.0-150600.10.58.1
  • kernel-rt_debug Real Time Module 15 SP6, openSUSE Leap 15.6 6.4.0-150600.10.58.1
  • kernel-source-rt Real Time Module 15 SP6, openSUSE Leap 15.6 6.4.0-150600.10.58.1
  • kernel-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-38.1
  • kernel-source-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-38.1
  • kernel-rt Linux Micro 6.2 6.12.0-160000.6.1
  • kernel-64kb SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.6.1

suse advisories SUSE-SU-2025:4301-1SUSE-SU-2025:21052-1SUSE-SU-2025:21064-1SUSE-SU-2025:21074-1SUSE-SU-2025:21139-1SUSE-SU-2026:20560-1

  • kernel-rt openSUSE Leap 16.0 6.12.0-160000.6.1
  • dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.6.1
  • kernel-64kb openSUSE Leap 16.0 6.12.0-160000.6.1
  • kernel-syms openSUSE Leap 16.0 6.12.0-160000.6.1
  • kernel-obs-qa openSUSE Leap 16.0 6.12.0-160000.6.1
  • kernel-source openSUSE Leap 16.0 6.12.0-160000.6.1
  • kernel-default openSUSE Leap 16.0 6.12.0-160000.6.1
  • kernel-kvmsmall openSUSE Leap 16.0 6.12.0-160000.6.1

opensuse advisories openSUSE-SU-2025:20081-1

  • kernel AlmaLinux 8 4.18.0-553.85.1.el8_10
  • perf AlmaLinux 8 4.18.0-553.85.1.el8_10
  • bpftool AlmaLinux 8 4.18.0-553.85.1.el8_10
  • kernel-core AlmaLinux 8 4.18.0-553.85.1.el8_10
  • kernel-tools AlmaLinux 8 4.18.0-553.85.1.el8_10
  • python3-perf AlmaLinux 8 4.18.0-553.85.1.el8_10
  • kernel-modules AlmaLinux 8 4.18.0-553.85.1.el8_10
  • kernel-zfcpdump AlmaLinux 8 4.18.0-553.85.1.el8_10

almalinux advisories ALSA-2025:21917ALSA-2025:21920

  • kernel-rt Rocky Linux 8 4.18.0-553.85.1.rt7.426.el8_10
  • kernel Rocky Linux 8 4.18.0-553.85.1.el8_10
  • kernel Rocky Linux 10 6.12.0-55.41.1.el10_0

rocky linux advisories RLSA-2025:21920RLSA-2025:21917RLSA-2025:19106

  • kernel Azure Linux 3.0 6.6.104.2-1
  • kernel CBL-Mariner 2.0 5.15.200.1-1

azure linux advisories AZL-66926AZL-73716

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-2025-39697 updated cvss 7.5

kernel: NFS: Fix a race when updating an existing write

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    affected: workaround, no fix planned “To mitigate this issue, prevent module nfs 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 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 nfs 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 5.14.0-427.100.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.100.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.100.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.100.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.100.1.el9_4
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21760
  • Red Hat CodeReady Linux Builder EUS (v.9.6) libperf 5.14.0-570.79.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.79.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.79.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.79.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.79.1.el9_6
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2026:0804
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-611.8.1.el9_7, perf 5.14.0-611.8.1.el9_7, rtla 5.14.0-611.8.1.el9_7, python3-perf 5.14.0-611.8.1.el9_7, kernel-devel-matched 5.14.0-611.8.1.el9_7, kernel-64k-devel-matched 5.14.0-611.8.1.el9_7, +7 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21469
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-124.9.1.el10_1, rv 6.12.0-55.41.1.el10_0, perf 6.12.0-124.9.1.el10_1, perf 6.12.0-55.41.1.el10_0, rtla 6.12.0-124.9.1.el10_1, rtla 6.12.0-55.41.1.el10_0, +20 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:19106
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) perf 5.14.0-70.153.1.el9_0, kernel-devel-matched 5.14.0-70.153.1.el9_0, kernel-debug-devel-matched 5.14.0-70.153.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.153.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.153.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.153.1.el9_0, +2 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21091
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) perf 5.14.0-284.146.1.el9_2, rtla 5.14.0-284.146.1.el9_2, kernel-devel-matched 5.14.0-284.146.1.el9_2, kernel-64k-devel-matched 5.14.0-284.146.1.el9_2, kernel-debug-devel-matched 5.14.0-284.146.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.146.1.el9_2, +5 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21051
show 31 more
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) rv 5.14.0-427.100.1.el9_4, perf 5.14.0-427.100.1.el9_4, rtla 5.14.0-427.100.1.el9_4, kernel-devel-matched 5.14.0-427.100.1.el9_4, kernel-64k-devel-matched 5.14.0-427.100.1.el9_4, kernel-debug-devel-matched 5.14.0-427.100.1.el9_4, +6 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21760
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) rv 5.14.0-570.79.1.el9_6, perf 5.14.0-570.79.1.el9_6, rtla 5.14.0-570.79.1.el9_6, python3-perf 5.14.0-570.79.1.el9_6, kernel-devel-matched 5.14.0-570.79.1.el9_6, kernel-64k-devel-matched 5.14.0-570.79.1.el9_6, +7 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2026:0804
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.85.1.el8_10, kernel 4.18.0-553.85.1.el8_10, bpftool 4.18.0-553.85.1.el8_10, kernel-core 4.18.0-553.85.1.el8_10, kernel-tools 4.18.0-553.85.1.el8_10, python3-perf 4.18.0-553.85.1.el8_10, +15 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21917
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-611.8.1.el9_7, kernel-64k 5.14.0-611.8.1.el9_7, kernel-core 5.14.0-611.8.1.el9_7, kernel-tools 5.14.0-611.8.1.el9_7, kernel-modules 5.14.0-611.8.1.el9_7, kernel-64k-core 5.14.0-611.8.1.el9_7, +27 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21469
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-124.9.1.el10_1, kernel 6.12.0-55.41.1.el10_0, kernel-64k 6.12.0-124.9.1.el10_1, kernel-64k 6.12.0-55.41.1.el10_0, kernel-core 6.12.0-124.9.1.el10_1, kernel-core 6.12.0-55.41.1.el10_0, +61 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:19106
  • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) perf 4.18.0-193.178.1.el8_2, kernel 4.18.0-193.178.1.el8_2, bpftool 4.18.0-193.178.1.el8_2, kernel-core 4.18.0-193.178.1.el8_2, kernel-tools 4.18.0-193.178.1.el8_2, python3-perf 4.18.0-193.178.1.el8_2, +8 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:23445
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.179.1.el8_4, kernel 4.18.0-305.179.1.el8_4, bpftool 4.18.0-305.179.1.el8_4, kernel-core 4.18.0-305.179.1.el8_4, kernel-tools 4.18.0-305.179.1.el8_4, python3-perf 4.18.0-305.179.1.el8_4, +8 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:22752
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.170.1.el8_6, kernel 4.18.0-372.170.1.el8_6, bpftool 4.18.0-372.170.1.el8_6, kernel-core 4.18.0-372.170.1.el8_6, kernel-tools 4.18.0-372.170.1.el8_6, python3-perf 4.18.0-372.170.1.el8_6, +8 more Red Hat Enterprise Linux BaseOS E4S (v.8.6) perf 4.18.0-372.170.1.el8_6, kernel 4.18.0-372.170.1.el8_6, bpftool 4.18.0-372.170.1.el8_6, kernel-core 4.18.0-372.170.1.el8_6, kernel-tools 4.18.0-372.170.1.el8_6, python3-perf 4.18.0-372.170.1.el8_6, +15 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:22006
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) perf 4.18.0-477.122.1.el8_8, kernel 4.18.0-477.122.1.el8_8, bpftool 4.18.0-477.122.1.el8_8, kernel-core 4.18.0-477.122.1.el8_8, kernel-tools 4.18.0-477.122.1.el8_8, python3-perf 4.18.0-477.122.1.el8_8, +9 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:22998
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0) kernel 5.14.0-70.153.1.el9_0, bpftool 5.14.0-70.153.1.el9_0, kernel-core 5.14.0-70.153.1.el9_0, kernel-tools 5.14.0-70.153.1.el9_0, python3-perf 5.14.0-70.153.1.el9_0, kernel-modules 5.14.0-70.153.1.el9_0, +14 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21091
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool 7.0.0-284.146.1.el9_2, kernel 5.14.0-284.146.1.el9_2, kernel-64k 5.14.0-284.146.1.el9_2, kernel-core 5.14.0-284.146.1.el9_2, kernel-tools 5.14.0-284.146.1.el9_2, python3-perf 5.14.0-284.146.1.el9_2, +28 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21051
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool 7.3.0-427.100.1.el9_4, kernel 5.14.0-427.100.1.el9_4, kernel-64k 5.14.0-427.100.1.el9_4, kernel-core 5.14.0-427.100.1.el9_4, kernel-tools 5.14.0-427.100.1.el9_4, python3-perf 5.14.0-427.100.1.el9_4, +28 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21760
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel 5.14.0-570.79.1.el9_6, kernel-64k 5.14.0-570.79.1.el9_6, kernel-core 5.14.0-570.79.1.el9_6, kernel-tools 5.14.0-570.79.1.el9_6, kernel-modules 5.14.0-570.79.1.el9_6, kernel-64k-core 5.14.0-570.79.1.el9_6, +27 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2026:0804
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) perf 4.18.0-305.179.1.el8_4, kernel 4.18.0-305.179.1.el8_4, bpftool 4.18.0-305.179.1.el8_4, kernel-core 4.18.0-305.179.1.el8_4, kernel-tools 4.18.0-305.179.1.el8_4, python3-perf 4.18.0-305.179.1.el8_4, +8 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:22752
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) perf 4.18.0-372.170.1.el8_6, kernel 4.18.0-372.170.1.el8_6, bpftool 4.18.0-372.170.1.el8_6, kernel-core 4.18.0-372.170.1.el8_6, kernel-tools 4.18.0-372.170.1.el8_6, python3-perf 4.18.0-372.170.1.el8_6, +8 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:22006
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) perf 4.18.0-477.122.1.el8_8, kernel 4.18.0-477.122.1.el8_8, bpftool 4.18.0-477.122.1.el8_8, kernel-core 4.18.0-477.122.1.el8_8, kernel-tools 4.18.0-477.122.1.el8_8, python3-perf 4.18.0-477.122.1.el8_8, +8 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:22998
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-611.8.1.el9_7, kernel-debuginfo-common-s390x 5.14.0-611.8.1.el9_7, kernel-debuginfo-common-x86_64 5.14.0-611.8.1.el9_7, kernel-debuginfo-common-aarch64 5.14.0-611.8.1.el9_7, kernel-debuginfo-common-ppc64le 5.14.0-611.8.1.el9_7
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21469
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-124.9.1.el10_1, libperf 6.12.0-55.41.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-124.9.1.el10_1, kernel-debuginfo-common-s390x 6.12.0-55.41.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-124.9.1.el10_1, kernel-debuginfo-common-x86_64 6.12.0-55.41.1.el10_0, +4 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:19106
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.85.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.85.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.85.1.el8_10
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21917
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.85.1.rt7.426.el8_10, kernel-rt-kvm 4.18.0-553.85.1.rt7.426.el8_10, kernel-rt-core 4.18.0-553.85.1.rt7.426.el8_10, kernel-rt-modules 4.18.0-553.85.1.rt7.426.el8_10, kernel-rt-debug-kvm 4.18.0-553.85.1.rt7.426.el8_10, kernel-rt-debug-core 4.18.0-553.85.1.rt7.426.el8_10, +4 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21920
  • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt 5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-kvm 5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-core 5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-modules 5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-debug-kvm 5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-debug-core 5.14.0-70.153.1.rt21.225.el9_0, +4 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21136
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-611.8.1.el9_7, kernel-rt-64k 5.14.0-611.8.1.el9_7, kernel-rt-core 5.14.0-611.8.1.el9_7, kernel-rt-modules 5.14.0-611.8.1.el9_7, kernel-rt-64k-core 5.14.0-611.8.1.el9_7, kernel-rt-debug-core 5.14.0-611.8.1.el9_7, +14 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21469
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-124.9.1.el10_1, kernel-rt 6.12.0-55.41.1.el10_0, kernel-rt-64k 6.12.0-124.9.1.el10_1, kernel-rt-64k 6.12.0-55.41.1.el10_0, kernel-rt-core 6.12.0-124.9.1.el10_1, kernel-rt-core 6.12.0-55.41.1.el10_0, +34 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:19106
  • Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt 5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-core 5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-modules 5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-debug-core 5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-debug-modules 5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-modules-extra 5.14.0-70.153.1.rt21.225.el9_0, +2 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21136
  • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt 5.14.0-284.146.1.rt14.431.el9_2, kernel-rt-core 5.14.0-284.146.1.rt14.431.el9_2, kernel-rt-modules 5.14.0-284.146.1.rt14.431.el9_2, kernel-rt-debug-core 5.14.0-284.146.1.rt14.431.el9_2, kernel-rt-modules-core 5.14.0-284.146.1.rt14.431.el9_2, kernel-rt-debug-modules 5.14.0-284.146.1.rt14.431.el9_2, +4 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21128
  • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt 5.14.0-427.100.1.el9_4, kernel-rt-core 5.14.0-427.100.1.el9_4, kernel-rt-modules 5.14.0-427.100.1.el9_4, kernel-rt-debug-core 5.14.0-427.100.1.el9_4, kernel-rt-modules-core 5.14.0-427.100.1.el9_4, kernel-rt-debug-modules 5.14.0-427.100.1.el9_4, +4 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21760
  • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt 5.14.0-570.79.1.el9_6, kernel-rt-64k 5.14.0-570.79.1.el9_6, kernel-rt-core 5.14.0-570.79.1.el9_6, kernel-rt-modules 5.14.0-570.79.1.el9_6, kernel-rt-64k-core 5.14.0-570.79.1.el9_6, kernel-rt-debug-core 5.14.0-570.79.1.el9_6, +14 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2026:0804
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-611.8.1.el9_7, kernel-rt-core 5.14.0-611.8.1.el9_7, kernel-rt-modules 5.14.0-611.8.1.el9_7, kernel-rt-debug-core 5.14.0-611.8.1.el9_7, kernel-rt-modules-core 5.14.0-611.8.1.el9_7, kernel-rt-debug-modules 5.14.0-611.8.1.el9_7, +4 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21469
  • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-124.9.1.el10_1, kernel-rt 6.12.0-55.41.1.el10_0, kernel-rt-kvm 6.12.0-55.41.1.el10_0, kernel-rt-core 6.12.0-124.9.1.el10_1, kernel-rt-core 6.12.0-55.41.1.el10_0, kernel-rt-modules 6.12.0-124.9.1.el10_1, +16 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:19106
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt 5.14.0-284.146.1.rt14.431.el9_2, kernel-rt-kvm 5.14.0-284.146.1.rt14.431.el9_2, kernel-rt-core 5.14.0-284.146.1.rt14.431.el9_2, kernel-rt-modules 5.14.0-284.146.1.rt14.431.el9_2, kernel-rt-debug-kvm 5.14.0-284.146.1.rt14.431.el9_2, kernel-rt-debug-core 5.14.0-284.146.1.rt14.431.el9_2, +6 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21128
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt 5.14.0-427.100.1.el9_4, kernel-rt-kvm 5.14.0-427.100.1.el9_4, kernel-rt-core 5.14.0-427.100.1.el9_4, kernel-rt-modules 5.14.0-427.100.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.100.1.el9_4, kernel-rt-debug-core 5.14.0-427.100.1.el9_4, +6 more
    fixed: vendor fix “To mitigate this issue, prevent module nfs 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-2025:21760

2 more fixed, 1 more not affected in the full advisory

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-25-162-05 updated cvss 4.7

Siemens SIMATIC S7-1500 CPU family

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.5
    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
partial
Assessed
4 mo ago

Exploit prediction

0.16% chance of exploitation in the next 30 days, higher than 5% 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 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Linux Linux
  • Siemens SIMATIC CN 4100
  • 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

Classification

Weakness
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
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.