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critical 9.8

CVE-2026-98432 in the critical feed json

ipv4: free inet_opt and ireq_opt after an RCU grace period

published 27d ago modified 5d ago also EUVD-2026-102025

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

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

ipv4: free inet_opt and ireq_opt after an RCU grace period

tcp_v4_syn_recv_sock() transfers ownership of ireq->ireq_opt to the child socket (newinet->inet_opt) without copying it.

Another cpu can concurrently process a retransmitted SYN for the same request socket, and send a SYNACK from tcp_check_req(). tcp_v4_send_synack() and inet_csk_route_req() read ireq->ireq_opt under rcu_read_lock() only, and ip_build_and_send_pkt() and ip_options_build() then read opt->optlen twice.

Note that the SYNACK timer itself is not an issue: it holds a reference on its request socket, and inet_csk_reqsk_queue_drop() calls timer_delete_sync() before the child can be freed.

Since commit 079096f103fa ("tcp/dccp: install syn_recv requests into ehash table"), request sockets are processed without holding the listener lock, so nothing prevents the child socket from being freed while the SYNACK is still being built. TCP child sockets do not have SOCK_RCU_FREE, and inet_sock_destruct() frees inet_opt with a plain kfree(), leading to a use-after-free in ip_options_build().

A similar issue exists with request socket migration (net.ipv4.tcp_migrate_req=1, or a BPF_SK_REUSEPORT_SELECT_OR_MIGRATE program). reqsk_timer_handler() clones the request socket with inet_reqsk_clone(), so that the old request socket and its clone share the same ireq_opt, then reqsk_migrate_reset() clears the pointer in the old one. Another cpu holding a reference on the old request socket can still be using these options (sending a SYNACK, or creating a child in tcp_v4_syn_recv_sock()) when the clone is freed, and tcp_v4_reqsk_destructor() also uses a plain kfree().

Readers already use RCU, and other paths replacing inet_opt (do_ip_setsockopt(), cipso_v4_sock_setattr()...) already use kfree_rcu(). Use kfree_rcu() in inet_sock_destruct() and tcp_v4_reqsk_destructor() as well.

IPv6 is not affected by the first issue, because tcp_v6_syn_recv_sock() duplicates the options. tcp_v6_reqsk_destructor() has the same migration issue with ipv6_opt, which is only set by CALIPSO. This will be addressed in a separate patch.

Patch / fix

  • Linux Linux 7.3
  • linux Debian 12 6.1.190-1
  • linux Debian 13 6.12.113-1
  • linux Debian 14 7.2.10-1
  • linux-6.12 Debian 12 6.12.113-1~deb12u1

debian advisories DEBIAN-CVE-2026-98432

  • linux Ubuntu 26.10 7.3.0-10.10
  • linux-aws Ubuntu 26.10 7.3.0-1004.4
  • linux-gcp Ubuntu 26.10 7.3.0-1004.4
  • linux-raspi Ubuntu 26.10 7.3.0-1004.4
  • linux-riscv Ubuntu 26.10 7.3.0-10.10.1
  • linux-oracle Ubuntu 26.10 7.3.0-1004.4
  • linux-realtime Ubuntu 26.10 7.3.0-10.10.1

ubuntu advisories UBUNTU-CVE-2026-98432

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-source Linux Micro 6.0 6.4.0-159998.55.1
  • kernel-default Linux Micro 6.0 6.4.0-159998.55.1
  • kernel-kvmsmall Linux Micro 6.0 6.4.0-159998.55.1
  • kernel-default-base Linux Micro 6.0 6.4.0-159998.55.1.159998.21.42
  • kernel-64kb SLE Module for Basesystem 15 SP7 6.4.0-150700.53.90.1
  • kernel-syms SLE Module for Development Tools 15 SP7 6.4.0-150700.53.90.1
  • kernel-azure SLE Module for Public Cloud 15 SP7 6.4.0-150700.53.90.1
  • kernel-source SLE Module for Development Tools 15 SP7, SLE Module for Basesystem 15 SP7 6.4.0-150700.53.90.1

suse advisories SUSE-SU-2026:5121-1SUSE-SU-2026:5107-1SUSE-SU-2026:24550-1SUSE-SU-2026:5091-1SUSE-SU-2026:5088-1SUSE-SU-2026:5086-1

  • rclone openSUSE Tumbleweed 1.76.0-1.1
  • kernel-livepatch-SLE16_Update_18 openSUSE Leap 16.0 2-160000.1.1
  • kernel-livepatch-SLE16-RT_Update_18 openSUSE Leap 16.0 2-160000.1.1
  • kernel-rt openSUSE Leap 16.0 6.12.0-160000.40.1
  • dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.40.1
  • kernel-64kb openSUSE Leap 16.0 6.12.0-160000.40.1
  • kernel-syms openSUSE Leap 16.0 6.12.0-160000.40.1
  • kernel-azure openSUSE Leap 16.0 6.12.0-160000.40.1

opensuse advisories openSUSE-SU-2026:12505-1openSUSE-SU-2026:22243-1openSUSE-SU-2026:22235-1openSUSE-SU-2026:22167-1

  • kernel AlmaLinux 9 5.14.0-687.64.1.el9_8
  • rv AlmaLinux 9 5.14.0-687.64.1.el9_8
  • perf AlmaLinux 9 5.14.0-687.64.1.el9_8
  • rtla AlmaLinux 9 5.14.0-687.64.1.el9_8
  • libperf AlmaLinux 9 5.14.0-687.64.1.el9_8
  • kernel-rt AlmaLinux 9 5.14.0-687.64.1.el9_8
  • kernel-64k AlmaLinux 9 5.14.0-687.64.1.el9_8
  • kernel-core AlmaLinux 9 5.14.0-687.64.1.el9_8

almalinux advisories ALSA-2026:93412ALSA-2026:93413ALSA-2026:93414ALSA-2026:93415

  • kernel Rocky Linux 10 6.12.0-211.72.1.el10_2
  • kernel Rocky Linux 9 5.14.0-687.64.1.el9_8
  • kernel Rocky Linux 8 4.18.0-553.182.1.el8_10

rocky linux advisories RLSA-2026:93413RLSA-2026:93412RLSA-2026:93414

  • kernel Azure Linux 3.0 6.6.159.1-1

azure linux advisories AZL-108246

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

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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-2026-98432 updated cvss 9.8

kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period

  • Red Hat Enterprise Linux AI (RHEL AI) 3 kernel
    affected: workaround, no fix available “See the security bulletin for a detailed mitigation procedure.”
  • Red Hat NVIDIA for RHEL 10 rv 6.12.0-265.31.el10nv, perf 6.12.0-265.31.el10nv, rtla 6.12.0-265.31.el10nv, kernel 6.12.0-265.31.el10nv, libperf 6.12.0-265.31.el10nv, kernel-64k 6.12.0-265.31.el10nv, +28 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:93775
  • Red Hat CodeReady Linux Builder EUS (v.9.6) libperf 5.14.0-570.154.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.154.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.154.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.154.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.154.1.el9_6
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94438
  • Red Hat Enterprise Linux kernel-modules-internal 6.12.0-211.72.1.el10_2
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:93413
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-687.64.1.el9_8, perf 5.14.0-687.64.1.el9_8, rtla 5.14.0-687.64.1.el9_8, python3-perf 5.14.0-687.64.1.el9_8, kernel-devel-matched 5.14.0-687.64.1.el9_8, kernel-64k-devel-matched 5.14.0-687.64.1.el9_8, +7 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:93412
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-211.72.1.el10_2, rv 6.12.0-264.14.1.el10_3, perf 6.12.0-211.72.1.el10_2, perf 6.12.0-264.14.1.el10_3, rtla 6.12.0-211.72.1.el10_2, rtla 6.12.0-264.14.1.el10_3, +20 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:93413
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) perf 5.14.0-284.202.1.el9_2, rtla 5.14.0-284.202.1.el9_2, kernel-devel-matched 5.14.0-284.202.1.el9_2, kernel-64k-devel-matched 5.14.0-284.202.1.el9_2, kernel-debug-devel-matched 5.14.0-284.202.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.202.1.el9_2, +5 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94477
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) rv 5.14.0-427.161.1.el9_4, perf 5.14.0-427.161.1.el9_4, rtla 5.14.0-427.161.1.el9_4, kernel-devel-matched 5.14.0-427.161.1.el9_4, kernel-64k-devel-matched 5.14.0-427.161.1.el9_4, kernel-debug-devel-matched 5.14.0-427.161.1.el9_4, +6 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94109
show 32 more
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) rv 6.12.0-55.117.1.el10_0, perf 6.12.0-55.117.1.el10_0, rtla 6.12.0-55.117.1.el10_0, python3-perf 6.12.0-55.117.1.el10_0, kernel-devel-matched 6.12.0-55.117.1.el10_0, kernel-64k-devel-matched 6.12.0-55.117.1.el10_0, +7 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94508
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) rv 5.14.0-570.154.1.el9_6, perf 5.14.0-570.154.1.el9_6, rtla 5.14.0-570.154.1.el9_6, python3-perf 5.14.0-570.154.1.el9_6, kernel-devel-matched 5.14.0-570.154.1.el9_6, kernel-64k-devel-matched 5.14.0-570.154.1.el9_6, +7 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94438
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.182.1.el8_10, kernel 4.18.0-553.182.1.el8_10, bpftool 4.18.0-553.182.1.el8_10, kernel-core 4.18.0-553.182.1.el8_10, kernel-tools 4.18.0-553.182.1.el8_10, python3-perf 4.18.0-553.182.1.el8_10, +15 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:93414
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-687.64.1.el9_8, kernel-64k 5.14.0-687.64.1.el9_8, kernel-core 5.14.0-687.64.1.el9_8, kernel-tools 5.14.0-687.64.1.el9_8, kernel-modules 5.14.0-687.64.1.el9_8, kernel-64k-core 5.14.0-687.64.1.el9_8, +27 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:93412
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-211.72.1.el10_2, kernel 6.12.0-264.14.1.el10_3, kernel-64k 6.12.0-211.72.1.el10_2, kernel-64k 6.12.0-264.14.1.el10_3, kernel-core 6.12.0-211.72.1.el10_2, kernel-core 6.12.0-264.14.1.el10_3, +62 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:93413
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.218.1.el8_4, kernel 4.18.0-305.218.1.el8_4, bpftool 4.18.0-305.218.1.el8_4, kernel-core 4.18.0-305.218.1.el8_4, kernel-tools 4.18.0-305.218.1.el8_4, python3-perf 4.18.0-305.218.1.el8_4, +8 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94623
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.227.1.el8_6, kernel 4.18.0-372.227.1.el8_6, bpftool 4.18.0-372.227.1.el8_6, kernel-core 4.18.0-372.227.1.el8_6, kernel-tools 4.18.0-372.227.1.el8_6, python3-perf 4.18.0-372.227.1.el8_6, +8 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94996
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) perf 4.18.0-477.178.1.el8_8, kernel 4.18.0-477.178.1.el8_8, bpftool 4.18.0-477.178.1.el8_8, kernel-core 4.18.0-477.178.1.el8_8, kernel-tools 4.18.0-477.178.1.el8_8, python3-perf 4.18.0-477.178.1.el8_8, +9 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94303
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool 7.0.0-284.202.1.el9_2, kernel 5.14.0-284.202.1.el9_2, kernel-64k 5.14.0-284.202.1.el9_2, kernel-core 5.14.0-284.202.1.el9_2, kernel-tools 5.14.0-284.202.1.el9_2, python3-perf 5.14.0-284.202.1.el9_2, +28 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94477
  • Red Hat Enterprise Linux BaseOS E4S (v.9.4) bpftool 7.3.0-427.161.1.el9_4, kernel 5.14.0-427.161.1.el9_4, kernel-64k 5.14.0-427.161.1.el9_4, kernel-core 5.14.0-427.161.1.el9_4, kernel-tools 5.14.0-427.161.1.el9_4, python3-perf 5.14.0-427.161.1.el9_4, +28 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94109
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel 6.12.0-55.117.1.el10_0, kernel-64k 6.12.0-55.117.1.el10_0, kernel-core 6.12.0-55.117.1.el10_0, kernel-tools 6.12.0-55.117.1.el10_0, kernel-modules 6.12.0-55.117.1.el10_0, kernel-64k-core 6.12.0-55.117.1.el10_0, +27 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94508
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel 5.14.0-570.154.1.el9_6, kernel-64k 5.14.0-570.154.1.el9_6, kernel-core 5.14.0-570.154.1.el9_6, kernel-tools 5.14.0-570.154.1.el9_6, kernel-modules 5.14.0-570.154.1.el9_6, kernel-64k-core 5.14.0-570.154.1.el9_6, +27 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94438
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) perf 4.18.0-305.218.1.el8_4, kernel 4.18.0-305.218.1.el8_4, bpftool 4.18.0-305.218.1.el8_4, kernel-core 4.18.0-305.218.1.el8_4, kernel-tools 4.18.0-305.218.1.el8_4, python3-perf 4.18.0-305.218.1.el8_4, +8 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94623
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) perf 4.18.0-372.227.1.el8_6, kernel 4.18.0-372.227.1.el8_6, bpftool 4.18.0-372.227.1.el8_6, kernel-core 4.18.0-372.227.1.el8_6, kernel-tools 4.18.0-372.227.1.el8_6, python3-perf 4.18.0-372.227.1.el8_6, +8 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94996
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) perf 4.18.0-477.178.1.el8_8, kernel 4.18.0-477.178.1.el8_8, bpftool 4.18.0-477.178.1.el8_8, kernel-core 4.18.0-477.178.1.el8_8, kernel-tools 4.18.0-477.178.1.el8_8, python3-perf 4.18.0-477.178.1.el8_8, +8 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94303
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-687.64.1.el9_8, kernel-debuginfo-common-s390x 5.14.0-687.64.1.el9_8, kernel-debuginfo-common-x86_64 5.14.0-687.64.1.el9_8, kernel-debuginfo-common-aarch64 5.14.0-687.64.1.el9_8, kernel-debuginfo-common-ppc64le 5.14.0-687.64.1.el9_8
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:93412
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-211.72.1.el10_2, libperf 6.12.0-264.14.1.el10_3, kernel-debuginfo-common-s390x 6.12.0-211.72.1.el10_2, kernel-debuginfo-common-s390x 6.12.0-264.14.1.el10_3, kernel-debuginfo-common-x86_64 6.12.0-211.72.1.el10_2, kernel-debuginfo-common-x86_64 6.12.0-264.14.1.el10_3, +4 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:93413
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libperf 6.12.0-55.117.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-55.117.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-55.117.1.el10_0, kernel-debuginfo-common-aarch64 6.12.0-55.117.1.el10_0, kernel-debuginfo-common-ppc64le 6.12.0-55.117.1.el10_0
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94508
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.182.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.182.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.182.1.el8_10
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:93414
  • Red Hat Enterprise Linux Hidden (v. 10) kernel-modules-internal 6.12.0-211.72.1.el10_2, kernel-debuginfo-common-x86_64 6.12.0-211.72.1.el10_2
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:93413
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.182.1.rt7.523.el8_10, kernel-rt-kvm 4.18.0-553.182.1.rt7.523.el8_10, kernel-rt-core 4.18.0-553.182.1.rt7.523.el8_10, kernel-rt-modules 4.18.0-553.182.1.rt7.523.el8_10, kernel-rt-debug-kvm 4.18.0-553.182.1.rt7.523.el8_10, kernel-rt-debug-core 4.18.0-553.182.1.rt7.523.el8_10, +4 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:93415
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-687.64.1.el9_8, kernel-rt-64k 5.14.0-687.64.1.el9_8, kernel-rt-core 5.14.0-687.64.1.el9_8, kernel-rt-modules 5.14.0-687.64.1.el9_8, kernel-rt-64k-core 5.14.0-687.64.1.el9_8, kernel-rt-debug-core 5.14.0-687.64.1.el9_8, +14 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:93412
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-211.72.1.el10_2, kernel-rt 6.12.0-264.14.1.el10_3, kernel-rt-64k 6.12.0-211.72.1.el10_2, kernel-rt-64k 6.12.0-264.14.1.el10_3, kernel-rt-core 6.12.0-211.72.1.el10_2, kernel-rt-core 6.12.0-264.14.1.el10_3, +34 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:93413
  • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt 5.14.0-284.202.1.rt14.487.el9_2, kernel-rt-core 5.14.0-284.202.1.rt14.487.el9_2, kernel-rt-modules 5.14.0-284.202.1.rt14.487.el9_2, kernel-rt-debug-core 5.14.0-284.202.1.rt14.487.el9_2, kernel-rt-modules-core 5.14.0-284.202.1.rt14.487.el9_2, kernel-rt-debug-modules 5.14.0-284.202.1.rt14.487.el9_2, +4 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94558
  • Red Hat Enterprise Linux Real Time E4S (v.9.4) kernel-rt 5.14.0-427.161.1.el9_4, kernel-rt-core 5.14.0-427.161.1.el9_4, kernel-rt-modules 5.14.0-427.161.1.el9_4, kernel-rt-debug-core 5.14.0-427.161.1.el9_4, kernel-rt-modules-core 5.14.0-427.161.1.el9_4, kernel-rt-debug-modules 5.14.0-427.161.1.el9_4, +4 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94109
  • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt 6.12.0-55.117.1.el10_0, kernel-rt-64k 6.12.0-55.117.1.el10_0, kernel-rt-core 6.12.0-55.117.1.el10_0, kernel-rt-modules 6.12.0-55.117.1.el10_0, kernel-rt-64k-core 6.12.0-55.117.1.el10_0, kernel-rt-debug-core 6.12.0-55.117.1.el10_0, +14 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94508
  • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt 5.14.0-570.154.1.el9_6, kernel-rt-64k 5.14.0-570.154.1.el9_6, kernel-rt-core 5.14.0-570.154.1.el9_6, kernel-rt-modules 5.14.0-570.154.1.el9_6, kernel-rt-64k-core 5.14.0-570.154.1.el9_6, kernel-rt-debug-core 5.14.0-570.154.1.el9_6, +14 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94438
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-687.64.1.el9_8, kernel-rt-core 5.14.0-687.64.1.el9_8, kernel-rt-modules 5.14.0-687.64.1.el9_8, kernel-rt-debug-core 5.14.0-687.64.1.el9_8, kernel-rt-modules-core 5.14.0-687.64.1.el9_8, kernel-rt-debug-modules 5.14.0-687.64.1.el9_8, +4 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:93412
  • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-211.72.1.el10_2, kernel-rt 6.12.0-264.14.1.el10_3, kernel-rt-core 6.12.0-211.72.1.el10_2, kernel-rt-core 6.12.0-264.14.1.el10_3, kernel-rt-modules 6.12.0-211.72.1.el10_2, kernel-rt-modules 6.12.0-264.14.1.el10_3, +15 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:93413
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt 5.14.0-284.202.1.rt14.487.el9_2, kernel-rt-kvm 5.14.0-284.202.1.rt14.487.el9_2, kernel-rt-core 5.14.0-284.202.1.rt14.487.el9_2, kernel-rt-modules 5.14.0-284.202.1.rt14.487.el9_2, kernel-rt-debug-kvm 5.14.0-284.202.1.rt14.487.el9_2, kernel-rt-debug-core 5.14.0-284.202.1.rt14.487.el9_2, +6 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94558
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) kernel-rt 5.14.0-427.161.1.el9_4, kernel-rt-kvm 5.14.0-427.161.1.el9_4, kernel-rt-core 5.14.0-427.161.1.el9_4, kernel-rt-modules 5.14.0-427.161.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.161.1.el9_4, kernel-rt-debug-core 5.14.0-427.161.1.el9_4, +6 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94109
  • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt 6.12.0-55.117.1.el10_0, kernel-rt-kvm 6.12.0-55.117.1.el10_0, kernel-rt-core 6.12.0-55.117.1.el10_0, kernel-rt-modules 6.12.0-55.117.1.el10_0, kernel-rt-debug-kvm 6.12.0-55.117.1.el10_0, kernel-rt-debug-core 6.12.0-55.117.1.el10_0, +6 more
    fixed: vendor fix “See the security bulletin for a detailed mitigation procedure.” RHSA-2026:94508

14 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

Exploit prediction

0.76% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Linux Linux

Classification

Technology feeds

References

Sources

Fencer Intel 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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.