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Fencer Vulns
medium 5.5

CVE-2026-23097 json

migrate: correct lock ordering for hugetlb file folios

published 2026-02-04 9 mo ago modified 2026-10-19 20 d ago also EUVD-2026-5445

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 1%
public exploits
0
none known

Summary

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

migrate: correct lock ordering for hugetlb file folios

Syzbot has found a deadlock (analyzed by Lance Yang):

1) Task (5749): Holds folio_lock, then tries to acquire i_mmap_rwsem(read lock). 2) Task (5754): Holds i_mmap_rwsem(write lock), then tries to acquire folio_lock.

migrate_pages() -> migrate_hugetlbs() -> unmap_and_move_huge_page() <- Takes folio_lock! -> remove_migration_ptes() -> __rmap_walk_file() -> i_mmap_lock_read() <- Waits for i_mmap_rwsem(read lock)!

hugetlbfs_fallocate() -> hugetlbfs_punch_hole() <- Takes i_mmap_rwsem(write lock)! -> hugetlbfs_zero_partial_page() -> filemap_lock_hugetlb_folio() -> filemap_lock_folio() -> __filemap_get_folio <- Waits for folio_lock!

The migration path is the one taking locks in the wrong order according to the documentation at the top of mm/rmap.c. So expand the scope of the existing i_mmap_lock to cover the calls to remove_migration_ptes() too.

This is (mostly) how it used to be after commit c0d0381ade79. That was removed by 336bf30eb765 for both file & anon hugetlb pages when it should only have been removed for anon hugetlb pages.

Patch / fix

  • Linux Linux 5.10, 5.10.249, 5.15.199, 6.1.162, 6.6.122, 6.12.68, 6.18.8, 6.19
  • linux Debian 12 6.1.162-1
  • linux Debian 13 6.12.69-1
  • linux Debian 14 6.18.8-1

debian advisories DEBIAN-CVE-2026-23097

  • linux Ubuntu 22.04 LTS 5.15.0-176.186
  • linux Ubuntu 24.04 LTS 6.8.0-117.117
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1105.112
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1055.58
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1105.114
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1058.61
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1101.107
  • linux-gke Ubuntu 24.04 LTS 6.8.0-1054.60

ubuntu advisories UBUNTU-CVE-2026-23097

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

  • kernel RHEL 10.1 6.12.0-124.43.1.el10_1
  • rv RHEL 10.1 6.12.0-124.43.1.el10_1
  • perf RHEL 10.1 6.12.0-124.43.1.el10_1
  • rtla RHEL 10.1 6.12.0-124.43.1.el10_1
  • libperf RHEL 10.1 6.12.0-124.43.1.el10_1
  • kernel-rt RHEL 10.1 6.12.0-124.43.1.el10_1
  • kernel-64k RHEL 10.1 6.12.0-124.43.1.el10_1
  • kernel-core RHEL 10.1 6.12.0-124.43.1.el10_1

red hat advisories RHSA-2026:26535RHSA-2026:15883RHSA-2026:14301RHSA-2026:14137RHSA-2026:13936RHSA-2026:13734

  • kernel-rt Real Time Module 15 SP7 6.4.0-150700.7.72.1
  • kernel-syms-rt Real Time Module 15 SP7 6.4.0-150700.7.72.1
  • kernel-source-rt Real Time Module 15 SP7 6.4.0-150700.7.72.1
  • kernel-64kb SLE Module for Basesystem 15 SP7 6.4.0-150700.53.78.1
  • kernel-syms SLE Module for Development Tools 15 SP7 6.4.0-150700.53.78.1
  • kernel-azure SLE Module for Public Cloud 15 SP7 6.4.0-150700.53.78.1
  • kernel-source SLE Module for Development Tools 15 SP7, SLE Module for Basesystem 15 SP7 6.4.0-150700.53.78.1
  • kernel-default SLE Workstation Extension 15 SP7, SLE Module for Legacy 15 SP7, SLE Module for Basesystem 15 SP7 +2 more 6.4.0-150700.53.78.1

suse advisories SUSE-SU-2026:3810-1SUSE-SU-2026:3790-1SUSE-SU-2026:23244-1SUSE-SU-2026:23241-1SUSE-SU-2026:23194-1SUSE-SU-2026:23193-1

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

opensuse advisories openSUSE-SU-2026:20416-1

  • kernel-abi-stablelists AlmaLinux 10 6.12.0-124.43.1.el10_1
  • kernel-rt AlmaLinux 8 4.18.0-553.109.1.rt7.450.el8_10
  • kernel-rt-core AlmaLinux 8 4.18.0-553.109.1.rt7.450.el8_10
  • kernel-rt-modules AlmaLinux 8 4.18.0-553.109.1.rt7.450.el8_10
  • kernel-rt-debug-core AlmaLinux 8 4.18.0-553.109.1.rt7.450.el8_10
  • kernel-rt-debug-modules AlmaLinux 8 4.18.0-553.109.1.rt7.450.el8_10
  • kernel-rt-modules-extra AlmaLinux 8 4.18.0-553.109.1.rt7.450.el8_10
  • kernel-rt-debug-modules-extra AlmaLinux 8 4.18.0-553.109.1.rt7.450.el8_10

almalinux advisories ALSA-2026:4012ALSA-2026:3463ALSA-2026:3464ALSA-2026:3488

  • kernel Rocky Linux 9 5.14.0-611.36.1.el9_7
  • kernel-rt Rocky Linux 8 4.18.0-553.109.1.rt7.450.el8_10
  • kernel Rocky Linux 8 4.18.0-553.109.1.el8_10

rocky linux advisories RLSA-2026:3488RLSA-2026:3463RLSA-2026:3464

  • kernel Azure Linux 3.0 6.6.126.1-1

azure linux advisories AZL-77181

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-2026-23097 updated cvss 7.3

kernel: Linux kernel: Denial of Service due to a deadlock in hugetlb folio migration

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    affected: workaround, no fix planned “Out of support scope”
  • 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
  • Red Hat CodeReady Linux Builder EUS (v.9.4) libperf 5.14.0-427.121.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.121.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.121.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.121.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.121.1.el9_4
    fixed: vendor fix RHSA-2026:10108
  • Red Hat CodeReady Linux Builder EUS (v.9.6) libperf 5.14.0-570.110.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.110.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.110.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.110.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.110.1.el9_6
    fixed: vendor fix RHSA-2026:11313
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-611.36.1.el9_7, perf 5.14.0-611.36.1.el9_7, rtla 5.14.0-611.36.1.el9_7, python3-perf 5.14.0-611.36.1.el9_7, kernel-devel-matched 5.14.0-611.36.1.el9_7, kernel-64k-devel-matched 5.14.0-611.36.1.el9_7, +7 more
    fixed: vendor fix RHSA-2026:3488
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-124.43.1.el10_1, perf 6.12.0-124.43.1.el10_1, rtla 6.12.0-124.43.1.el10_1, python3-perf 6.12.0-124.43.1.el10_1, kernel-devel-matched 6.12.0-124.43.1.el10_1, kernel-64k-devel-matched 6.12.0-124.43.1.el10_1, +7 more
    fixed: vendor fix RHSA-2026:4012
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) perf 5.14.0-70.178.1.el9_0, kernel-devel-matched 5.14.0-70.178.1.el9_0, kernel-debug-devel-matched 5.14.0-70.178.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.178.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.178.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.178.1.el9_0, +2 more
    fixed: vendor fix RHSA-2026:13936
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) perf 5.14.0-284.169.1.el9_2, rtla 5.14.0-284.169.1.el9_2, kernel-devel-matched 5.14.0-284.169.1.el9_2, kernel-64k-devel-matched 5.14.0-284.169.1.el9_2, kernel-debug-devel-matched 5.14.0-284.169.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.169.1.el9_2, +5 more
    fixed: vendor fix RHSA-2026:13734
show 31 more
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) rv 6.12.0-55.72.1.el10_0, perf 6.12.0-55.72.1.el10_0, rtla 6.12.0-55.72.1.el10_0, python3-perf 6.12.0-55.72.1.el10_0, kernel-devel-matched 6.12.0-55.72.1.el10_0, kernel-64k-devel-matched 6.12.0-55.72.1.el10_0, +7 more
    fixed: vendor fix RHSA-2026:15883
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) rv 5.14.0-427.121.1.el9_4, perf 5.14.0-427.121.1.el9_4, rtla 5.14.0-427.121.1.el9_4, kernel-devel-matched 5.14.0-427.121.1.el9_4, kernel-64k-devel-matched 5.14.0-427.121.1.el9_4, kernel-debug-devel-matched 5.14.0-427.121.1.el9_4, +6 more
    fixed: vendor fix RHSA-2026:10108
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) rv 5.14.0-570.110.1.el9_6, perf 5.14.0-570.110.1.el9_6, rtla 5.14.0-570.110.1.el9_6, python3-perf 5.14.0-570.110.1.el9_6, kernel-devel-matched 5.14.0-570.110.1.el9_6, kernel-64k-devel-matched 5.14.0-570.110.1.el9_6, +7 more
    fixed: vendor fix RHSA-2026:11313
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.109.1.el8_10, kernel 4.18.0-553.109.1.el8_10, bpftool 4.18.0-553.109.1.el8_10, kernel-core 4.18.0-553.109.1.el8_10, kernel-tools 4.18.0-553.109.1.el8_10, python3-perf 4.18.0-553.109.1.el8_10, +15 more
    fixed: vendor fix RHSA-2026:3464
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-611.36.1.el9_7, kernel-64k 5.14.0-611.36.1.el9_7, kernel-core 5.14.0-611.36.1.el9_7, kernel-tools 5.14.0-611.36.1.el9_7, kernel-modules 5.14.0-611.36.1.el9_7, kernel-64k-core 5.14.0-611.36.1.el9_7, +27 more
    fixed: vendor fix RHSA-2026:3488
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-124.43.1.el10_1, kernel-64k 6.12.0-124.43.1.el10_1, kernel-core 6.12.0-124.43.1.el10_1, kernel-tools 6.12.0-124.43.1.el10_1, kernel-modules 6.12.0-124.43.1.el10_1, kernel-64k-core 6.12.0-124.43.1.el10_1, +28 more
    fixed: vendor fix RHSA-2026:4012
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.194.1.el8_4, kernel 4.18.0-305.194.1.el8_4, bpftool 4.18.0-305.194.1.el8_4, kernel-core 4.18.0-305.194.1.el8_4, kernel-tools 4.18.0-305.194.1.el8_4, python3-perf 4.18.0-305.194.1.el8_4, +8 more
    fixed: vendor fix RHSA-2026:26535
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.190.1.el8_6, kernel 4.18.0-372.190.1.el8_6, bpftool 4.18.0-372.190.1.el8_6, kernel-core 4.18.0-372.190.1.el8_6, kernel-tools 4.18.0-372.190.1.el8_6, python3-perf 4.18.0-372.190.1.el8_6, +8 more Red Hat Enterprise Linux BaseOS E4S (v.8.6) perf 4.18.0-372.190.1.el8_6, kernel 4.18.0-372.190.1.el8_6, bpftool 4.18.0-372.190.1.el8_6, kernel-core 4.18.0-372.190.1.el8_6, kernel-tools 4.18.0-372.190.1.el8_6, python3-perf 4.18.0-372.190.1.el8_6, +15 more
    fixed: vendor fix RHSA-2026:13664
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) perf 4.18.0-477.139.1.el8_8, kernel 4.18.0-477.139.1.el8_8, bpftool 4.18.0-477.139.1.el8_8, kernel-core 4.18.0-477.139.1.el8_8, kernel-tools 4.18.0-477.139.1.el8_8, python3-perf 4.18.0-477.139.1.el8_8, +9 more
    fixed: vendor fix RHSA-2026:13681
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0) kernel 5.14.0-70.178.1.el9_0, bpftool 5.14.0-70.178.1.el9_0, kernel-core 5.14.0-70.178.1.el9_0, kernel-tools 5.14.0-70.178.1.el9_0, python3-perf 5.14.0-70.178.1.el9_0, kernel-modules 5.14.0-70.178.1.el9_0, +14 more
    fixed: vendor fix RHSA-2026:13936
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool 7.0.0-284.169.1.el9_2, kernel 5.14.0-284.169.1.el9_2, kernel-64k 5.14.0-284.169.1.el9_2, kernel-core 5.14.0-284.169.1.el9_2, kernel-tools 5.14.0-284.169.1.el9_2, python3-perf 5.14.0-284.169.1.el9_2, +28 more
    fixed: vendor fix RHSA-2026:13734
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel 6.12.0-55.72.1.el10_0, kernel-64k 6.12.0-55.72.1.el10_0, kernel-core 6.12.0-55.72.1.el10_0, kernel-tools 6.12.0-55.72.1.el10_0, kernel-modules 6.12.0-55.72.1.el10_0, kernel-64k-core 6.12.0-55.72.1.el10_0, +27 more
    fixed: vendor fix RHSA-2026:15883
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool 7.3.0-427.121.1.el9_4, kernel 5.14.0-427.121.1.el9_4, kernel-64k 5.14.0-427.121.1.el9_4, kernel-core 5.14.0-427.121.1.el9_4, kernel-tools 5.14.0-427.121.1.el9_4, python3-perf 5.14.0-427.121.1.el9_4, +28 more
    fixed: vendor fix RHSA-2026:10108
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel 5.14.0-570.110.1.el9_6, kernel-64k 5.14.0-570.110.1.el9_6, kernel-core 5.14.0-570.110.1.el9_6, kernel-tools 5.14.0-570.110.1.el9_6, kernel-modules 5.14.0-570.110.1.el9_6, kernel-64k-core 5.14.0-570.110.1.el9_6, +27 more
    fixed: vendor fix RHSA-2026:11313
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) perf 4.18.0-305.194.1.el8_4, kernel 4.18.0-305.194.1.el8_4, bpftool 4.18.0-305.194.1.el8_4, kernel-core 4.18.0-305.194.1.el8_4, kernel-tools 4.18.0-305.194.1.el8_4, python3-perf 4.18.0-305.194.1.el8_4, +8 more
    fixed: vendor fix RHSA-2026:26535
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) perf 4.18.0-372.190.1.el8_6, kernel 4.18.0-372.190.1.el8_6, bpftool 4.18.0-372.190.1.el8_6, kernel-core 4.18.0-372.190.1.el8_6, kernel-tools 4.18.0-372.190.1.el8_6, python3-perf 4.18.0-372.190.1.el8_6, +8 more
    fixed: vendor fix RHSA-2026:13664
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) perf 4.18.0-477.139.1.el8_8, kernel 4.18.0-477.139.1.el8_8, bpftool 4.18.0-477.139.1.el8_8, kernel-core 4.18.0-477.139.1.el8_8, kernel-tools 4.18.0-477.139.1.el8_8, python3-perf 4.18.0-477.139.1.el8_8, +8 more
    fixed: vendor fix RHSA-2026:13681
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-611.36.1.el9_7, kernel-debuginfo-common-s390x 5.14.0-611.36.1.el9_7, kernel-debuginfo-common-x86_64 5.14.0-611.36.1.el9_7, kernel-debuginfo-common-aarch64 5.14.0-611.36.1.el9_7, kernel-debuginfo-common-ppc64le 5.14.0-611.36.1.el9_7
    fixed: vendor fix RHSA-2026:3488
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-124.43.1.el10_1, kernel-debuginfo-common-s390x 6.12.0-124.43.1.el10_1, kernel-debuginfo-common-x86_64 6.12.0-124.43.1.el10_1, kernel-debuginfo-common-aarch64 6.12.0-124.43.1.el10_1, kernel-debuginfo-common-ppc64le 6.12.0-124.43.1.el10_1
    fixed: vendor fix RHSA-2026:4012
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libperf 6.12.0-55.72.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-55.72.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-55.72.1.el10_0, kernel-debuginfo-common-aarch64 6.12.0-55.72.1.el10_0, kernel-debuginfo-common-ppc64le 6.12.0-55.72.1.el10_0
    fixed: vendor fix RHSA-2026:15883
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.109.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.109.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.109.1.el8_10
    fixed: vendor fix RHSA-2026:3464
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.109.1.rt7.450.el8_10, kernel-rt-kvm 4.18.0-553.109.1.rt7.450.el8_10, kernel-rt-core 4.18.0-553.109.1.rt7.450.el8_10, kernel-rt-modules 4.18.0-553.109.1.rt7.450.el8_10, kernel-rt-debug-kvm 4.18.0-553.109.1.rt7.450.el8_10, kernel-rt-debug-core 4.18.0-553.109.1.rt7.450.el8_10, +4 more
    fixed: vendor fix RHSA-2026:3463
  • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt 5.14.0-70.178.1.rt21.250.el9_0, kernel-rt-kvm 5.14.0-70.178.1.rt21.250.el9_0, kernel-rt-core 5.14.0-70.178.1.rt21.250.el9_0, kernel-rt-modules 5.14.0-70.178.1.rt21.250.el9_0, kernel-rt-debug-kvm 5.14.0-70.178.1.rt21.250.el9_0, kernel-rt-debug-core 5.14.0-70.178.1.rt21.250.el9_0, +4 more
    fixed: vendor fix RHSA-2026:14137
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-611.36.1.el9_7, kernel-rt-64k 5.14.0-611.36.1.el9_7, kernel-rt-core 5.14.0-611.36.1.el9_7, kernel-rt-modules 5.14.0-611.36.1.el9_7, kernel-rt-64k-core 5.14.0-611.36.1.el9_7, kernel-rt-debug-core 5.14.0-611.36.1.el9_7, +14 more
    fixed: vendor fix RHSA-2026:3488
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-124.43.1.el10_1, kernel-rt-64k 6.12.0-124.43.1.el10_1, kernel-rt-core 6.12.0-124.43.1.el10_1, kernel-rt-modules 6.12.0-124.43.1.el10_1, kernel-rt-64k-core 6.12.0-124.43.1.el10_1, kernel-rt-debug-core 6.12.0-124.43.1.el10_1, +14 more
    fixed: vendor fix RHSA-2026:4012
  • Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt 5.14.0-70.178.1.rt21.250.el9_0, kernel-rt-core 5.14.0-70.178.1.rt21.250.el9_0, kernel-rt-modules 5.14.0-70.178.1.rt21.250.el9_0, kernel-rt-debug-core 5.14.0-70.178.1.rt21.250.el9_0, kernel-rt-debug-modules 5.14.0-70.178.1.rt21.250.el9_0, kernel-rt-modules-extra 5.14.0-70.178.1.rt21.250.el9_0, +2 more
    fixed: vendor fix RHSA-2026:14137
  • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt 5.14.0-284.169.1.rt14.454.el9_2, kernel-rt-core 5.14.0-284.169.1.rt14.454.el9_2, kernel-rt-modules 5.14.0-284.169.1.rt14.454.el9_2, kernel-rt-debug-core 5.14.0-284.169.1.rt14.454.el9_2, kernel-rt-modules-core 5.14.0-284.169.1.rt14.454.el9_2, kernel-rt-debug-modules 5.14.0-284.169.1.rt14.454.el9_2, +4 more
    fixed: vendor fix RHSA-2026:14301
  • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt 6.12.0-55.72.1.el10_0, kernel-rt-64k 6.12.0-55.72.1.el10_0, kernel-rt-core 6.12.0-55.72.1.el10_0, kernel-rt-modules 6.12.0-55.72.1.el10_0, kernel-rt-64k-core 6.12.0-55.72.1.el10_0, kernel-rt-debug-core 6.12.0-55.72.1.el10_0, +14 more
    fixed: vendor fix RHSA-2026:15883
  • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt 5.14.0-427.121.1.el9_4, kernel-rt-core 5.14.0-427.121.1.el9_4, kernel-rt-modules 5.14.0-427.121.1.el9_4, kernel-rt-debug-core 5.14.0-427.121.1.el9_4, kernel-rt-modules-core 5.14.0-427.121.1.el9_4, kernel-rt-debug-modules 5.14.0-427.121.1.el9_4, +4 more
    fixed: vendor fix RHSA-2026:10108
  • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt 5.14.0-570.110.1.el9_6, kernel-rt-64k 5.14.0-570.110.1.el9_6, kernel-rt-core 5.14.0-570.110.1.el9_6, kernel-rt-modules 5.14.0-570.110.1.el9_6, kernel-rt-64k-core 5.14.0-570.110.1.el9_6, kernel-rt-debug-core 5.14.0-570.110.1.el9_6, +14 more
    fixed: vendor fix RHSA-2026:11313
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-611.36.1.el9_7, kernel-rt-core 5.14.0-611.36.1.el9_7, kernel-rt-modules 5.14.0-611.36.1.el9_7, kernel-rt-debug-core 5.14.0-611.36.1.el9_7, kernel-rt-modules-core 5.14.0-611.36.1.el9_7, kernel-rt-debug-modules 5.14.0-611.36.1.el9_7, +4 more
    fixed: vendor fix RHSA-2026:3488

6 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 SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
4 mo ago

Exploit prediction

0.11% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Linux Linux

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.