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Fencer Vulns
high 8.8

CVE-2026-43284 in the critical feed json

xfrm: esp: avoid in-place decrypt on shared skb frags

published 2026-05-08 6 mo ago modified 2026-10-15 25 d ago also EUVD-2026-28535

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
94.2%
EPSS 94.2% chance of exploitation in 30 days, percentile 99.8%
public exploits
3
Metasploit, Exploit-DB

Summary

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

xfrm: esp: avoid in-place decrypt on shared skb frags

MSG_SPLICE_PAGES can attach pages from a pipe directly to an skb. TCP marks such skbs with SKBFL_SHARED_FRAG after skb_splice_from_iter(), so later paths that may modify packet data can first make a private copy. The IPv4/IPv6 datagram append paths did not set this flag when splicing pages into UDP skbs.

That leaves an ESP-in-UDP packet made from shared pipe pages looking like an ordinary uncloned nonlinear skb. ESP input then takes the no-COW fast path for uncloned skbs without a frag_list and decrypts in place over data that is not owned privately by the skb.

Mark IPv4/IPv6 datagram splice frags with SKBFL_SHARED_FRAG, matching TCP. Also make ESP input fall back to skb_cow_data() when the flag is present, so ESP does not decrypt externally backed frags in place. Private nonlinear skb frags still use the existing fast path.

This intentionally does not change ESP output. In esp_output_head(), the path that appends the ESP trailer to existing skb tailroom without calling skb_cow_data() is not reachable for nonlinear skbs: skb_tailroom() returns zero when skb->data_len is nonzero, while ESP tailen is positive. Thus ESP output will either use the separate destination-frag path or fall back to skb_cow_data().

Patch / fix

  • Linux Linux 5.10.255, 5.15.205, 5.15.206, 6.1.171, 6.1.172, 6.6.138, 6.12.87, 6.18.28, 7.0.5, 7.1
  • Red Hat NVIDIA for RHEL 10 0:6.12.0-211.7.el10nv, 0:6.12.0-231.12.el10nv
  • Red Hat Red Hat Enterprise Linux 10 0:6.12.0-124.56.1.el10_1, 0:6.12.0-211.7.3.el10_2, 0:6.12.0-211.16.1.el10_2
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:6.12.0-55.73.1.el10_0
  • Red Hat Red Hat Enterprise Linux 8 0:4.18.0-553.124.1.el8_10, 0:4.18.0-553.124.1.rt7.465.el8_10
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:4.18.0-305.191.1.el8_4
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:4.18.0-305.191.1.el8_4
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:4.18.0-372.192.1.el8_6
  • Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:4.18.0-372.192.1.el8_6
  • Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:4.18.0-372.192.1.el8_6
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:4.18.0-477.140.1.el8_8
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:4.18.0-477.140.1.el8_8
  • Red Hat Red Hat Enterprise Linux 9 0:5.14.0-611.55.1.el9_7, 0:5.14.0-687.5.3.el9_8, 0:5.14.0-687.10.1.el9_8
  • Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:5.14.0-70.179.1.el9_0, 0:5.14.0-70.179.1.rt21.251.el9_0
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:5.14.0-284.170.1.el9_2, 0:5.14.0-284.170.1.rt14.455.el9_2
  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:5.14.0-427.125.1.el9_4
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:5.14.0-570.113.1.el9_6
  • Red Hat Red Hat OpenShift Container Platform 4.12 412.86.202605111404-0, 412.86.202605271418-0
  • Red Hat Red Hat OpenShift Container Platform 4.13 413.92.202606160406-0
  • Red Hat Red Hat OpenShift Container Platform 4.14 414.92.202605111427-0
  • Red Hat Red Hat OpenShift Container Platform 4.15 415.92.202606030318-0
  • Red Hat Red Hat OpenShift Container Platform 4.16 416.94.202605101426-0
  • Red Hat Red Hat OpenShift Container Platform 4.17 417.94.202606250942-0
  • Red Hat Red Hat OpenShift Container Platform 4.18 418.94.202605101521-0
  • Red Hat Red Hat OpenShift Container Platform 4.19 4.19.9.6.202605110225-0
  • Red Hat Red Hat OpenShift Container Platform 4.20 4.20.9.6.202605110206-0
  • Red Hat Red Hat OpenShift Container Platform 4.21 4.21.9.6.202605110143-0
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.7
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.7
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.7
  • linux Debian 12 6.1.170-3
  • linux Debian 13 6.12.86-1
  • linux Debian 14 7.0.4-1

debian advisories DEBIAN-CVE-2026-43284

  • linux Ubuntu 22.04 LTS 5.15.0-181.191
  • linux Ubuntu 24.04 LTS 6.8.0-124.124
  • linux Ubuntu 25.10 6.17.0-35.35
  • linux Ubuntu 26.04 LTS 7.0.0-22.22
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1109.116
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1057.60
  • linux-aws Ubuntu 25.10 6.17.0-1017.17
  • linux-aws Ubuntu 26.04 LTS 7.0.0-1006.6

ubuntu advisories UBUNTU-CVE-2026-43284

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 enterprise linux nvidia 10 6.12.0-231.12.el10nv
  • rv enterprise linux nvidia 10 6.12.0-231.12.el10nv
  • perf enterprise linux nvidia 10 6.12.0-231.12.el10nv
  • rtla enterprise linux nvidia 10 6.12.0-231.12.el10nv
  • kernel-64k enterprise linux nvidia 10 6.12.0-231.12.el10nv
  • kernel-core enterprise linux nvidia 10 6.12.0-231.12.el10nv
  • kernel-tools enterprise linux nvidia 10 6.12.0-231.12.el10nv
  • python3-perf enterprise linux nvidia 10 6.12.0-231.12.el10nv

red hat advisories RHSA-2026:33486RHSA-2026:19577RHSA-2026:19575RHSA-2026:19572RHSA-2026:19573RHSA-2026:19574

  • kernel-syms SLES 16.0, Linux Micro Extras 6.2, SLES for SAP applications 16.0 6.12.0-160000.36.1
  • kernel-obs-build Linux Micro Extras 6.2 6.12.0-160000.36.1
  • kernel-rt Linux Micro 6.2 6.12.0-160000.36.1
  • kernel-64kb SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.36.1
  • kernel-source SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.36.1
  • kernel-default SLES 16.0, SLE High Availability Extension 16.0, Linux Micro 6.2 +1 more 6.12.0-160000.36.1
  • kernel-default-base SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.36.1.160000.2.17
  • kernel-azure SLES for SAP applications 16.0, SLES 16.0 6.12.0-160000.36.1

suse advisories SUSE-SU-2026:22742-1SUSE-SU-2026:22769-1SUSE-SU-2026:22835-1SUSE-SU-2026:22812-1SUSE-SU-2026:2914-1SUSE-SU-2026:2800-1

  • kernel-rt openSUSE Leap 16.0 6.12.0-160000.36.1
  • dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-64kb openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-syms openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-azure openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-obs-qa openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-source openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-default openSUSE Leap 16.0 6.12.0-160000.36.1

opensuse advisories openSUSE-SU-2026:21388-1openSUSE-SU-2026:10793-1

  • kernel AlmaLinux 9 5.14.0-687.10.1.el9_8
  • rv AlmaLinux 9 5.14.0-687.10.1.el9_8
  • perf AlmaLinux 9 5.14.0-687.10.1.el9_8
  • rtla AlmaLinux 9 5.14.0-687.10.1.el9_8
  • libperf AlmaLinux 9 5.14.0-687.10.1.el9_8
  • kernel-rt AlmaLinux 9 5.14.0-687.10.1.el9_8
  • kernel-64k AlmaLinux 9 5.14.0-687.10.1.el9_8
  • kernel-core AlmaLinux 9 5.14.0-687.10.1.el9_8

almalinux advisories ALSA-2026:19568ALSA-2026:19569ALSA-2026:19074ALSA-2026:19225ALSA-2026:16195ALSA-2026:16196

  • kernel Rocky Linux 10 6.12.0-211.16.1.el10_2.0.1
  • kernel Rocky Linux 9 5.14.0-687.10.1.el9_8.0.1
  • kernel-rt Rocky Linux 8 4.18.0-553.124.1.rt7.465.el8_10
  • kernel Rocky Linux 8 4.18.0-553.124.1.el8_10
  • kernel Rocky Linux 10 6.12.0-124.56.1.el10_1
  • kernel Rocky Linux 9 5.14.0-611.55.1.el9_7

rocky linux advisories RLSA-2026:19569RLSA-2026:19568RLSA-2026:16196RLSA-2026:16195RLSA-2026:16062RLSA-2026:16206

  • kernel Azure Linux 3.0 6.6.138.1-1

azure linux advisories AZL-86133

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-2026-43284 updated cvss 7.8

kernel: "Dirty Frag" ESP XFRM variant is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel

  • Red Hat NVIDIA for RHEL 10 rv 6.12.0-211.7.el10nv, rv 6.12.0-231.12.el10nv, perf 6.12.0-211.7.el10nv, rtla 6.12.0-211.7.el10nv, perf 6.12.0-231.12.el10nv, rtla 6.12.0-231.12.el10nv, +56 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:17795
  • Red Hat CodeReady Linux Builder EUS (v.9.4) libperf 5.14.0-427.125.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.125.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.125.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.125.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.125.1.el9_4
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16100
  • Red Hat CodeReady Linux Builder EUS (v.9.6) libperf 5.14.0-570.113.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.113.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.113.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.113.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.113.1.el9_6
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16312
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-687.5.3.el9_8, rv 5.14.0-611.55.1.el9_7, rv 5.14.0-687.10.1.el9_8, perf 5.14.0-687.5.3.el9_8, rtla 5.14.0-687.5.3.el9_8, perf 5.14.0-611.55.1.el9_7, +33 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16206
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-211.7.3.el10_2, rv 6.12.0-124.56.1.el10_1, rv 6.12.0-211.16.1.el10_2, perf 6.12.0-211.7.3.el10_2, rtla 6.12.0-211.7.3.el10_2, perf 6.12.0-124.56.1.el10_1, +33 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16062
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) perf 5.14.0-70.179.1.el9_0, kernel-devel-matched 5.14.0-70.179.1.el9_0, kernel-debug-devel-matched 5.14.0-70.179.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.179.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.179.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.179.1.el9_0, +2 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16202
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) perf 5.14.0-284.170.1.el9_2, rtla 5.14.0-284.170.1.el9_2, kernel-devel-matched 5.14.0-284.170.1.el9_2, kernel-64k-devel-matched 5.14.0-284.170.1.el9_2, kernel-debug-devel-matched 5.14.0-284.170.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.170.1.el9_2, +5 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16328
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) rv 6.12.0-55.73.1.el10_0, perf 6.12.0-55.73.1.el10_0, rtla 6.12.0-55.73.1.el10_0, python3-perf 6.12.0-55.73.1.el10_0, kernel-devel-matched 6.12.0-55.73.1.el10_0, kernel-64k-devel-matched 6.12.0-55.73.1.el10_0, +7 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16314
show 31 more
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) rv 5.14.0-427.125.1.el9_4, perf 5.14.0-427.125.1.el9_4, rtla 5.14.0-427.125.1.el9_4, kernel-devel-matched 5.14.0-427.125.1.el9_4, kernel-64k-devel-matched 5.14.0-427.125.1.el9_4, kernel-debug-devel-matched 5.14.0-427.125.1.el9_4, +6 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16100
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) rv 5.14.0-570.113.1.el9_6, perf 5.14.0-570.113.1.el9_6, rtla 5.14.0-570.113.1.el9_6, python3-perf 5.14.0-570.113.1.el9_6, kernel-devel-matched 5.14.0-570.113.1.el9_6, kernel-64k-devel-matched 5.14.0-570.113.1.el9_6, +7 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16312
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.124.1.el8_10, kernel 4.18.0-553.124.1.el8_10, bpftool 4.18.0-553.124.1.el8_10, kernel-core 4.18.0-553.124.1.el8_10, kernel-tools 4.18.0-553.124.1.el8_10, python3-perf 4.18.0-553.124.1.el8_10, +20 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16195
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-687.5.3.el9_8, kernel 5.14.0-611.55.1.el9_7, kernel 5.14.0-687.10.1.el9_8, kernel-64k 5.14.0-687.5.3.el9_8, kernel-64k 5.14.0-611.55.1.el9_7, kernel-64k 5.14.0-687.10.1.el9_8, +93 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16206
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-211.7.3.el10_2, kernel 6.12.0-124.56.1.el10_1, kernel 6.12.0-211.16.1.el10_2, kernel-64k 6.12.0-211.7.3.el10_2, kernel-64k 6.12.0-124.56.1.el10_1, kernel-64k 6.12.0-211.16.1.el10_2, +96 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16062
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.191.1.el8_4, kernel 4.18.0-305.191.1.el8_4, bpftool 4.18.0-305.191.1.el8_4, kernel-core 4.18.0-305.191.1.el8_4, kernel-tools 4.18.0-305.191.1.el8_4, python3-perf 4.18.0-305.191.1.el8_4, +8 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16201
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.192.1.el8_6, kernel 4.18.0-372.192.1.el8_6, bpftool 4.18.0-372.192.1.el8_6, kernel-core 4.18.0-372.192.1.el8_6, kernel-tools 4.18.0-372.192.1.el8_6, python3-perf 4.18.0-372.192.1.el8_6, +8 more Red Hat Enterprise Linux BaseOS E4S (v.8.6) perf 4.18.0-372.192.1.el8_6, kernel 4.18.0-372.192.1.el8_6, bpftool 4.18.0-372.192.1.el8_6, kernel-core 4.18.0-372.192.1.el8_6, kernel-tools 4.18.0-372.192.1.el8_6, python3-perf 4.18.0-372.192.1.el8_6, +20 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16204
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) perf 4.18.0-477.140.1.el8_8, kernel 4.18.0-477.140.1.el8_8, bpftool 4.18.0-477.140.1.el8_8, kernel-core 4.18.0-477.140.1.el8_8, kernel-tools 4.18.0-477.140.1.el8_8, python3-perf 4.18.0-477.140.1.el8_8, +14 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16061
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0) kernel 5.14.0-70.179.1.el9_0, bpftool 5.14.0-70.179.1.el9_0, kernel-core 5.14.0-70.179.1.el9_0, kernel-tools 5.14.0-70.179.1.el9_0, python3-perf 5.14.0-70.179.1.el9_0, kernel-modules 5.14.0-70.179.1.el9_0, +19 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16202
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool 7.0.0-284.170.1.el9_2, kernel 5.14.0-284.170.1.el9_2, kernel-64k 5.14.0-284.170.1.el9_2, kernel-core 5.14.0-284.170.1.el9_2, kernel-tools 5.14.0-284.170.1.el9_2, python3-perf 5.14.0-284.170.1.el9_2, +33 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16328
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel 6.12.0-55.73.1.el10_0, kernel-64k 6.12.0-55.73.1.el10_0, kernel-core 6.12.0-55.73.1.el10_0, kernel-tools 6.12.0-55.73.1.el10_0, kernel-modules 6.12.0-55.73.1.el10_0, kernel-64k-core 6.12.0-55.73.1.el10_0, +27 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16314
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool 7.3.0-427.125.1.el9_4, kernel 5.14.0-427.125.1.el9_4, kernel-64k 5.14.0-427.125.1.el9_4, kernel-core 5.14.0-427.125.1.el9_4, kernel-tools 5.14.0-427.125.1.el9_4, python3-perf 5.14.0-427.125.1.el9_4, +33 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16100
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel 5.14.0-570.113.1.el9_6, kernel-64k 5.14.0-570.113.1.el9_6, kernel-core 5.14.0-570.113.1.el9_6, kernel-tools 5.14.0-570.113.1.el9_6, kernel-modules 5.14.0-570.113.1.el9_6, kernel-64k-core 5.14.0-570.113.1.el9_6, +31 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16312
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) perf 4.18.0-305.191.1.el8_4, kernel 4.18.0-305.191.1.el8_4, bpftool 4.18.0-305.191.1.el8_4, kernel-core 4.18.0-305.191.1.el8_4, kernel-tools 4.18.0-305.191.1.el8_4, python3-perf 4.18.0-305.191.1.el8_4, +8 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16201
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) perf 4.18.0-372.192.1.el8_6, kernel 4.18.0-372.192.1.el8_6, bpftool 4.18.0-372.192.1.el8_6, kernel-core 4.18.0-372.192.1.el8_6, kernel-tools 4.18.0-372.192.1.el8_6, python3-perf 4.18.0-372.192.1.el8_6, +8 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16204
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) perf 4.18.0-477.140.1.el8_8, kernel 4.18.0-477.140.1.el8_8, bpftool 4.18.0-477.140.1.el8_8, kernel-core 4.18.0-477.140.1.el8_8, kernel-tools 4.18.0-477.140.1.el8_8, python3-perf 4.18.0-477.140.1.el8_8, +8 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16061
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-687.5.3.el9_8, libperf 5.14.0-611.55.1.el9_7, libperf 5.14.0-687.10.1.el9_8, kernel-debuginfo-common-s390x 5.14.0-687.5.3.el9_8, kernel-debuginfo-common-s390x 5.14.0-611.55.1.el9_7, kernel-debuginfo-common-s390x 5.14.0-687.10.1.el9_8, +9 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16206
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-211.7.3.el10_2, libperf 6.12.0-124.56.1.el10_1, libperf 6.12.0-211.16.1.el10_2, kernel-debuginfo-common-s390x 6.12.0-211.7.3.el10_2, kernel-debuginfo-common-s390x 6.12.0-124.56.1.el10_1, kernel-debuginfo-common-s390x 6.12.0-211.16.1.el10_2, +9 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16062
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libperf 6.12.0-55.73.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-55.73.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-55.73.1.el10_0, kernel-debuginfo-common-aarch64 6.12.0-55.73.1.el10_0, kernel-debuginfo-common-ppc64le 6.12.0-55.73.1.el10_0
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16314
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.124.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.124.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.124.1.el8_10
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16195
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.124.1.rt7.465.el8_10, kernel-rt-kvm 4.18.0-553.124.1.rt7.465.el8_10, kernel-rt-core 4.18.0-553.124.1.rt7.465.el8_10, kernel-rt-modules 4.18.0-553.124.1.rt7.465.el8_10, kernel-rt-debug-kvm 4.18.0-553.124.1.rt7.465.el8_10, kernel-rt-debug-core 4.18.0-553.124.1.rt7.465.el8_10, +4 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16196
  • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt 5.14.0-70.179.1.rt21.251.el9_0, kernel-rt-kvm 5.14.0-70.179.1.rt21.251.el9_0, kernel-rt-core 5.14.0-70.179.1.rt21.251.el9_0, kernel-rt-modules 5.14.0-70.179.1.rt21.251.el9_0, kernel-rt-debug-kvm 5.14.0-70.179.1.rt21.251.el9_0, kernel-rt-debug-core 5.14.0-70.179.1.rt21.251.el9_0, +4 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16203
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-687.5.3.el9_8, kernel-rt 5.14.0-611.55.1.el9_7, kernel-rt 5.14.0-687.10.1.el9_8, kernel-rt-64k 5.14.0-687.5.3.el9_8, kernel-rt-64k 5.14.0-611.55.1.el9_7, kernel-rt-64k 5.14.0-687.10.1.el9_8, +54 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16206
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-211.7.3.el10_2, kernel-rt 6.12.0-124.56.1.el10_1, kernel-rt 6.12.0-211.16.1.el10_2, kernel-rt-64k 6.12.0-211.7.3.el10_2, kernel-rt-64k 6.12.0-124.56.1.el10_1, kernel-rt-64k 6.12.0-211.16.1.el10_2, +54 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16062
  • Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt 5.14.0-70.179.1.rt21.251.el9_0, kernel-rt-core 5.14.0-70.179.1.rt21.251.el9_0, kernel-rt-modules 5.14.0-70.179.1.rt21.251.el9_0, kernel-rt-debug-core 5.14.0-70.179.1.rt21.251.el9_0, kernel-rt-debug-modules 5.14.0-70.179.1.rt21.251.el9_0, kernel-rt-modules-extra 5.14.0-70.179.1.rt21.251.el9_0, +2 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16203
  • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt 5.14.0-284.170.1.rt14.455.el9_2, kernel-rt-core 5.14.0-284.170.1.rt14.455.el9_2, kernel-rt-modules 5.14.0-284.170.1.rt14.455.el9_2, kernel-rt-debug-core 5.14.0-284.170.1.rt14.455.el9_2, kernel-rt-modules-core 5.14.0-284.170.1.rt14.455.el9_2, kernel-rt-debug-modules 5.14.0-284.170.1.rt14.455.el9_2, +4 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16254
  • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt 6.12.0-55.73.1.el10_0, kernel-rt-64k 6.12.0-55.73.1.el10_0, kernel-rt-core 6.12.0-55.73.1.el10_0, kernel-rt-modules 6.12.0-55.73.1.el10_0, kernel-rt-64k-core 6.12.0-55.73.1.el10_0, kernel-rt-debug-core 6.12.0-55.73.1.el10_0, +14 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16314
  • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt 5.14.0-427.125.1.el9_4, kernel-rt-core 5.14.0-427.125.1.el9_4, kernel-rt-modules 5.14.0-427.125.1.el9_4, kernel-rt-debug-core 5.14.0-427.125.1.el9_4, kernel-rt-modules-core 5.14.0-427.125.1.el9_4, kernel-rt-debug-modules 5.14.0-427.125.1.el9_4, +4 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16100
  • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt 5.14.0-570.113.1.el9_6, kernel-rt-64k 5.14.0-570.113.1.el9_6, kernel-rt-core 5.14.0-570.113.1.el9_6, kernel-rt-modules 5.14.0-570.113.1.el9_6, kernel-rt-64k-core 5.14.0-570.113.1.el9_6, kernel-rt-debug-core 5.14.0-570.113.1.el9_6, +14 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16312
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-687.5.3.el9_8, kernel-rt 5.14.0-611.55.1.el9_7, kernel-rt 5.14.0-687.10.1.el9_8, kernel-rt-core 5.14.0-687.5.3.el9_8, kernel-rt-core 5.14.0-611.55.1.el9_7, kernel-rt-core 5.14.0-687.10.1.el9_8, +24 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16206
  • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-211.7.3.el10_2, kernel-rt 6.12.0-124.56.1.el10_1, kernel-rt 6.12.0-211.16.1.el10_2, kernel-rt-core 6.12.0-211.7.3.el10_2, kernel-rt-core 6.12.0-124.56.1.el10_1, kernel-rt-core 6.12.0-211.16.1.el10_2, +24 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:16062

15 more fixed, 2 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-26-302-03 updated cvss 8.8

Hitachi Energy CoreTec Product

  • Hitachi Energy CoreTec5 <= 3.4.0
    affected: vendor fix
  • Hitachi Energy CoreTec5 5.0.0
    fixed

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

cisa ICSA-26-225-04 updated cvss 8.8

Hitachi Energy APM Edge Product

  • Hitachi Energy APM Edge vers:APM_Edge/<=6.10
    affected: mitigation

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 8.8

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 ICSA-26-174-06 updated cvss 7.8

Impact of Linux Kernel vulnerabilities on B&R products

  • B&R Industrial Automation GmbH APROL <APROL-AutoYaST-DVD-_V4.4-010.10.260602
    affected: vendor fix
  • B&R Industrial Automation GmbH Linux for B&R <=12 B&R Industrial Automation GmbH X20EDS410 /all
    affected: workaround, mitigation
  • B&R Industrial Automation GmbH APROL APROL-AutoYaST-DVD-_V4.4-010.10.260602
    fixed

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

Timeline

  1. First public exploit (Metasploit exploit/linux/local/cve_2026_43284_dirty_frag)
  2. Published

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
6 mo ago

Exploit prediction

94.19% chance of exploitation in the next 30 days, higher than 99.8% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
CNA 3.1 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/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
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CNA 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
  • Red Hat NVIDIA for RHEL 10
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
  • 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 OpenShift Container Platform 4.12
  • Red Hat Red Hat OpenShift Container Platform 4.13
  • Red Hat Red Hat OpenShift Container Platform 4.14
  • Red Hat Red Hat OpenShift Container Platform 4.15
  • Red Hat Red Hat OpenShift Container Platform 4.16
  • Red Hat Red Hat OpenShift Container Platform 4.17
  • Red Hat Red Hat OpenShift Container Platform 4.18
  • Red Hat Red Hat OpenShift Container Platform 4.19
  • Red Hat Red Hat OpenShift Container Platform 4.20
  • Red Hat Red Hat OpenShift Container Platform 4.21
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • 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-123 Write-what-where Condition
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.