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medium 6.3

CVE-2026-53059 json

dm log: fix out-of-bounds write due to region_count overflow

published 4mo ago modified 5d ago also EUVD-2026-38927

cvss
6.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits
0
none known

Summary

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

dm log: fix out-of-bounds write due to region_count overflow

The local variable region_count in create_log_context() is declared as unsigned int (32-bit), but dm_sector_div_up() returns sector_t (64-bit). When a device-mapper target has a sufficiently large ti->len with a small region_size, the division result can exceed UINT_MAX. The truncated value is then used to calculate bitset_size, causing clean_bits, sync_bits, and recovering_bits to be allocated far smaller than needed for the actual number of regions.

Subsequent log operations (log_set_bit, log_clear_bit, log_test_bit) use region indices derived from the full untruncated region space, causing out-of-bounds writes to kernel heap memory allocated by vmalloc.

This can be reproduced by creating a mirror target whose region_count overflows 32 bits:

dmsetup create bigzero --table '0 8589934594 zero' dmsetup create mymirror --table '0 8589934594 mirror \ core 2 2 nosync 2 /dev/mapper/bigzero 0 \ /dev/mapper/bigzero 0'

The status output confirms the truncation (sync_count=1 instead of 4294967297, because 0x100000001 was truncated to 1):

$ dmsetup status mymirror 0 8589934594 mirror 2 254:1 254:1 1/4294967297 ...

This leads to a kernel crash in core_in_sync:

BUG: scheduling while atomic: (udev-worker)/9150/0x00000000 RIP: 0010:core_in_sync+0x14/0x30 [dm_log] CR2: 0000000000000008 Fixing recursive fault but reboot is needed!

Fix by widening the local region_count to sector_t and adding an explicit overflow check before the value is assigned to lc->region_count.

Patch / fix

  • Linux Linux 7.1
  • Red Hat Red Hat Enterprise Linux 10 0:6.12.0-211.39.1.el10_2
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:6.12.0-55.98.1.el10_0
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:3.10.0-1160.159.1.el7, 0:3.10.0-1160.159.1.rt56.1311.el7
  • Red Hat Red Hat Enterprise Linux 8 0:4.18.0-553.147.1.el8_10, 0:4.18.0-553.147.1.rt7.488.el8_10
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:4.18.0-305.200.1.el8_4
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:4.18.0-305.200.1.el8_4
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:4.18.0-372.206.1.el8_6
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:4.18.0-372.206.1.el8_6
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:4.18.0-477.158.1.el8_8
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:4.18.0-477.158.1.el8_8
  • Red Hat Red Hat Enterprise Linux 9 0:5.14.0-687.30.1.el9_8
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:5.14.0-284.188.1.el9_2, 0:5.14.0-284.188.1.rt14.473.el9_2
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:5.14.0-570.135.1.el9_6
  • linux Debian 12 6.1.176-1
  • linux Debian 13 6.12.94-1
  • linux Debian 14 7.0.10-1

debian advisories DEBIAN-CVE-2026-53059

  • linux Ubuntu 22.04 LTS 5.15.0-186.196
  • linux Ubuntu 24.04 LTS 6.8.0-136.136
  • linux Ubuntu 26.04 LTS 7.0.0-28.28
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1112.119
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1061.64
  • linux-aws Ubuntu 26.04 LTS 7.0.0-1009.9
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1112.122
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1064.72

ubuntu advisories UBUNTU-CVE-2026-53059

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

  • kernel RHEL 9 5.14.0-687.30.1.el9_8
  • rv RHEL 9 5.14.0-687.30.1.el9_8
  • perf RHEL 9 5.14.0-687.30.1.el9_8
  • rtla RHEL 9 5.14.0-687.30.1.el9_8
  • libperf RHEL 9 5.14.0-687.30.1.el9_8
  • kernel-rt RHEL 9 5.14.0-687.30.1.el9_8
  • kernel-64k RHEL 9 5.14.0-687.30.1.el9_8
  • kernel-core RHEL 9 5.14.0-687.30.1.el9_8

red hat advisories RHSA-2026:73645RHSA-2026:63189RHSA-2026:61692RHSA-2026:59662RHSA-2026:59663RHSA-2026:56574

  • 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-2026:24550-1SUSE-SU-2026:5091-1SUSE-SU-2026:4595-1SUSE-SU-2026:4254-1SUSE-SU-2026:4369-1

  • kernel-rt openSUSE Leap 16.0 6.12.0-160000.38.1
  • dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-64kb openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-syms openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-azure openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-obs-qa openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-source openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-default openSUSE Leap 16.0 6.12.0-160000.38.1

opensuse advisories openSUSE-SU-2026:21910-1

  • kernel AlmaLinux 10 6.12.0-211.39.1.el10_2
  • rv AlmaLinux 10 6.12.0-211.39.1.el10_2
  • perf AlmaLinux 10 6.12.0-211.39.1.el10_2
  • rtla AlmaLinux 10 6.12.0-211.39.1.el10_2
  • libperf AlmaLinux 10 6.12.0-211.39.1.el10_2
  • kernel-rt AlmaLinux 10 6.12.0-211.39.1.el10_2
  • kernel-64k AlmaLinux 10 6.12.0-211.39.1.el10_2
  • kernel-core AlmaLinux 10 6.12.0-211.39.1.el10_2

almalinux advisories ALSA-2026:45114ALSA-2026:45115ALSA-2026:45116ALSA-2026:45192

  • kernel Rocky Linux 9 5.14.0-687.30.1.el9_8.cloud.1.0
  • kernel Rocky Linux 8 4.18.0-553.147.1.el8_10.cloud.0.1
  • kernel Rocky Linux 9 5.14.0-687.30.1.el9_8
  • kernel Rocky Linux 10 6.12.0-211.39.1.el10_2
  • kernel-rt Rocky Linux 8 4.18.0-553.147.1.rt7.488.el8_10
  • kernel Rocky Linux 8 4.18.0-553.147.1.el8_10

rocky linux advisories RXSA-2026:45192RXSA-2026:45115RLSA-2026:45192RLSA-2026:45114RLSA-2026:45116RLSA-2026:45115

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Vendor advisories

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red hat product security vex CVE-2026-53059 updated cvss 6.3

kernel: dm log: fix out-of-bounds write due to region_count overflow

  • 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: no fix available
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    under investigation
  • Red Hat CodeReady Linux Builder EUS (v.9.6) libperf 5.14.0-570.135.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.135.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.135.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.135.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.135.1.el9_6
    fixed: vendor fix RHSA-2026:56574
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-687.30.1.el9_8, perf 5.14.0-687.30.1.el9_8, rtla 5.14.0-687.30.1.el9_8, python3-perf 5.14.0-687.30.1.el9_8, kernel-devel-matched 5.14.0-687.30.1.el9_8, kernel-64k-devel-matched 5.14.0-687.30.1.el9_8, +7 more
    fixed: vendor fix RHSA-2026:45192
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-211.39.1.el10_2, perf 6.12.0-211.39.1.el10_2, rtla 6.12.0-211.39.1.el10_2, python3-perf 6.12.0-211.39.1.el10_2, kernel-devel-matched 6.12.0-211.39.1.el10_2, kernel-64k-devel-matched 6.12.0-211.39.1.el10_2, +7 more
    fixed: vendor fix RHSA-2026:45114
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) perf 5.14.0-284.188.1.el9_2, rtla 5.14.0-284.188.1.el9_2, kernel-devel-matched 5.14.0-284.188.1.el9_2, kernel-64k-devel-matched 5.14.0-284.188.1.el9_2, kernel-debug-devel-matched 5.14.0-284.188.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.188.1.el9_2, +5 more
    fixed: vendor fix RHSA-2026:59662
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) rv 5.14.0-427.153.1.el9_4, perf 5.14.0-427.153.1.el9_4, rtla 5.14.0-427.153.1.el9_4, kernel-devel-matched 5.14.0-427.153.1.el9_4, kernel-64k-devel-matched 5.14.0-427.153.1.el9_4, kernel-debug-devel-matched 5.14.0-427.153.1.el9_4, +6 more
    fixed: vendor fix RHSA-2026:73645
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) rv 6.12.0-55.98.1.el10_0, perf 6.12.0-55.98.1.el10_0, rtla 6.12.0-55.98.1.el10_0, python3-perf 6.12.0-55.98.1.el10_0, kernel-devel-matched 6.12.0-55.98.1.el10_0, kernel-64k-devel-matched 6.12.0-55.98.1.el10_0, +7 more
    fixed: vendor fix RHSA-2026:55445
show 32 more
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) rv 5.14.0-570.135.1.el9_6, perf 5.14.0-570.135.1.el9_6, rtla 5.14.0-570.135.1.el9_6, python3-perf 5.14.0-570.135.1.el9_6, kernel-devel-matched 5.14.0-570.135.1.el9_6, kernel-64k-devel-matched 5.14.0-570.135.1.el9_6, +7 more
    fixed: vendor fix RHSA-2026:56574
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.147.1.el8_10, kernel 4.18.0-553.147.1.el8_10, bpftool 4.18.0-553.147.1.el8_10, kernel-core 4.18.0-553.147.1.el8_10, kernel-tools 4.18.0-553.147.1.el8_10, python3-perf 4.18.0-553.147.1.el8_10, +15 more
    fixed: vendor fix RHSA-2026:45115
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-687.30.1.el9_8, kernel-64k 5.14.0-687.30.1.el9_8, kernel-core 5.14.0-687.30.1.el9_8, kernel-tools 5.14.0-687.30.1.el9_8, kernel-modules 5.14.0-687.30.1.el9_8, kernel-64k-core 5.14.0-687.30.1.el9_8, +27 more
    fixed: vendor fix RHSA-2026:45192
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-211.39.1.el10_2, kernel-64k 6.12.0-211.39.1.el10_2, kernel-core 6.12.0-211.39.1.el10_2, kernel-tools 6.12.0-211.39.1.el10_2, kernel-modules 6.12.0-211.39.1.el10_2, kernel-64k-core 6.12.0-211.39.1.el10_2, +28 more
    fixed: vendor fix RHSA-2026:45114
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.200.1.el8_4, kernel 4.18.0-305.200.1.el8_4, bpftool 4.18.0-305.200.1.el8_4, kernel-core 4.18.0-305.200.1.el8_4, kernel-tools 4.18.0-305.200.1.el8_4, python3-perf 4.18.0-305.200.1.el8_4, +8 more
    fixed: vendor fix RHSA-2026:47248
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.206.1.el8_6, kernel 4.18.0-372.206.1.el8_6, bpftool 4.18.0-372.206.1.el8_6, kernel-core 4.18.0-372.206.1.el8_6, kernel-tools 4.18.0-372.206.1.el8_6, python3-perf 4.18.0-372.206.1.el8_6, +8 more
    fixed: vendor fix RHSA-2026:53989
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) perf 4.18.0-477.158.1.el8_8, kernel 4.18.0-477.158.1.el8_8, bpftool 4.18.0-477.158.1.el8_8, kernel-core 4.18.0-477.158.1.el8_8, kernel-tools 4.18.0-477.158.1.el8_8, python3-perf 4.18.0-477.158.1.el8_8, +9 more
    fixed: vendor fix RHSA-2026:52649
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool 7.0.0-284.188.1.el9_2, kernel 5.14.0-284.188.1.el9_2, kernel-64k 5.14.0-284.188.1.el9_2, kernel-core 5.14.0-284.188.1.el9_2, kernel-tools 5.14.0-284.188.1.el9_2, python3-perf 5.14.0-284.188.1.el9_2, +28 more
    fixed: vendor fix RHSA-2026:59662
  • Red Hat Enterprise Linux BaseOS E4S (v.9.4) bpftool 7.3.0-427.153.1.el9_4, kernel 5.14.0-427.153.1.el9_4, kernel-64k 5.14.0-427.153.1.el9_4, kernel-core 5.14.0-427.153.1.el9_4, kernel-tools 5.14.0-427.153.1.el9_4, python3-perf 5.14.0-427.153.1.el9_4, +28 more
    fixed: vendor fix RHSA-2026:73645
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel 6.12.0-55.98.1.el10_0, kernel-64k 6.12.0-55.98.1.el10_0, kernel-core 6.12.0-55.98.1.el10_0, kernel-tools 6.12.0-55.98.1.el10_0, kernel-modules 6.12.0-55.98.1.el10_0, kernel-64k-core 6.12.0-55.98.1.el10_0, +27 more
    fixed: vendor fix RHSA-2026:55445
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel 5.14.0-570.135.1.el9_6, kernel-64k 5.14.0-570.135.1.el9_6, kernel-core 5.14.0-570.135.1.el9_6, kernel-tools 5.14.0-570.135.1.el9_6, kernel-modules 5.14.0-570.135.1.el9_6, kernel-64k-core 5.14.0-570.135.1.el9_6, +27 more
    fixed: vendor fix RHSA-2026:56574
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) perf 4.18.0-305.200.1.el8_4, kernel 4.18.0-305.200.1.el8_4, bpftool 4.18.0-305.200.1.el8_4, kernel-core 4.18.0-305.200.1.el8_4, kernel-tools 4.18.0-305.200.1.el8_4, python3-perf 4.18.0-305.200.1.el8_4, +8 more
    fixed: vendor fix RHSA-2026:47248
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) perf 4.18.0-372.206.1.el8_6, kernel 4.18.0-372.206.1.el8_6, bpftool 4.18.0-372.206.1.el8_6, kernel-core 4.18.0-372.206.1.el8_6, kernel-tools 4.18.0-372.206.1.el8_6, python3-perf 4.18.0-372.206.1.el8_6, +8 more
    fixed: vendor fix RHSA-2026:53989
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) perf 4.18.0-477.158.1.el8_8, kernel 4.18.0-477.158.1.el8_8, bpftool 4.18.0-477.158.1.el8_8, kernel-core 4.18.0-477.158.1.el8_8, kernel-tools 4.18.0-477.158.1.el8_8, python3-perf 4.18.0-477.158.1.el8_8, +8 more
    fixed: vendor fix RHSA-2026:52649
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-687.30.1.el9_8, kernel-debuginfo-common-s390x 5.14.0-687.30.1.el9_8, kernel-debuginfo-common-x86_64 5.14.0-687.30.1.el9_8, kernel-debuginfo-common-aarch64 5.14.0-687.30.1.el9_8, kernel-debuginfo-common-ppc64le 5.14.0-687.30.1.el9_8
    fixed: vendor fix RHSA-2026:45192
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-211.39.1.el10_2, kernel-debuginfo-common-s390x 6.12.0-211.39.1.el10_2, kernel-debuginfo-common-x86_64 6.12.0-211.39.1.el10_2, kernel-debuginfo-common-aarch64 6.12.0-211.39.1.el10_2, kernel-debuginfo-common-ppc64le 6.12.0-211.39.1.el10_2
    fixed: vendor fix RHSA-2026:45114
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libperf 6.12.0-55.98.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-55.98.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-55.98.1.el10_0, kernel-debuginfo-common-aarch64 6.12.0-55.98.1.el10_0, kernel-debuginfo-common-ppc64le 6.12.0-55.98.1.el10_0
    fixed: vendor fix RHSA-2026:55445
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.147.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.147.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.147.1.el8_10
    fixed: vendor fix RHSA-2026:45115
  • Red Hat Enterprise Linux for Real Time (v. 7 ELS) kernel-rt 3.10.0-1160.159.1.rt56.1311.el7, kernel-rt-trace 3.10.0-1160.159.1.rt56.1311.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.159.1.rt56.1311.el7
    fixed: vendor fix RHSA-2026:63189
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.147.1.rt7.488.el8_10, kernel-rt-kvm 4.18.0-553.147.1.rt7.488.el8_10, kernel-rt-core 4.18.0-553.147.1.rt7.488.el8_10, kernel-rt-modules 4.18.0-553.147.1.rt7.488.el8_10, kernel-rt-debug-kvm 4.18.0-553.147.1.rt7.488.el8_10, kernel-rt-debug-core 4.18.0-553.147.1.rt7.488.el8_10, +4 more
    fixed: vendor fix RHSA-2026:45116
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-687.30.1.el9_8, kernel-rt-64k 5.14.0-687.30.1.el9_8, kernel-rt-core 5.14.0-687.30.1.el9_8, kernel-rt-modules 5.14.0-687.30.1.el9_8, kernel-rt-64k-core 5.14.0-687.30.1.el9_8, kernel-rt-debug-core 5.14.0-687.30.1.el9_8, +14 more
    fixed: vendor fix RHSA-2026:45192
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-211.39.1.el10_2, kernel-rt-64k 6.12.0-211.39.1.el10_2, kernel-rt-core 6.12.0-211.39.1.el10_2, kernel-rt-modules 6.12.0-211.39.1.el10_2, kernel-rt-64k-core 6.12.0-211.39.1.el10_2, kernel-rt-debug-core 6.12.0-211.39.1.el10_2, +14 more
    fixed: vendor fix RHSA-2026:45114
  • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt 5.14.0-284.188.1.rt14.473.el9_2, kernel-rt-core 5.14.0-284.188.1.rt14.473.el9_2, kernel-rt-modules 5.14.0-284.188.1.rt14.473.el9_2, kernel-rt-debug-core 5.14.0-284.188.1.rt14.473.el9_2, kernel-rt-modules-core 5.14.0-284.188.1.rt14.473.el9_2, kernel-rt-debug-modules 5.14.0-284.188.1.rt14.473.el9_2, +4 more
    fixed: vendor fix RHSA-2026:59663
  • Red Hat Enterprise Linux Real Time E4S (v.9.4) kernel-rt 5.14.0-427.153.1.el9_4, kernel-rt-core 5.14.0-427.153.1.el9_4, kernel-rt-modules 5.14.0-427.153.1.el9_4, kernel-rt-debug-core 5.14.0-427.153.1.el9_4, kernel-rt-modules-core 5.14.0-427.153.1.el9_4, kernel-rt-debug-modules 5.14.0-427.153.1.el9_4, +4 more
    fixed: vendor fix RHSA-2026:73645
  • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt 6.12.0-55.98.1.el10_0, kernel-rt-64k 6.12.0-55.98.1.el10_0, kernel-rt-core 6.12.0-55.98.1.el10_0, kernel-rt-modules 6.12.0-55.98.1.el10_0, kernel-rt-64k-core 6.12.0-55.98.1.el10_0, kernel-rt-debug-core 6.12.0-55.98.1.el10_0, +14 more
    fixed: vendor fix RHSA-2026:55445
  • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt 5.14.0-570.135.1.el9_6, kernel-rt-64k 5.14.0-570.135.1.el9_6, kernel-rt-core 5.14.0-570.135.1.el9_6, kernel-rt-modules 5.14.0-570.135.1.el9_6, kernel-rt-64k-core 5.14.0-570.135.1.el9_6, kernel-rt-debug-core 5.14.0-570.135.1.el9_6, +14 more
    fixed: vendor fix RHSA-2026:56574
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-687.30.1.el9_8, kernel-rt-core 5.14.0-687.30.1.el9_8, kernel-rt-modules 5.14.0-687.30.1.el9_8, kernel-rt-debug-core 5.14.0-687.30.1.el9_8, kernel-rt-modules-core 5.14.0-687.30.1.el9_8, kernel-rt-debug-modules 5.14.0-687.30.1.el9_8, +4 more
    fixed: vendor fix RHSA-2026:45192
  • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-211.39.1.el10_2, kernel-rt-core 6.12.0-211.39.1.el10_2, kernel-rt-modules 6.12.0-211.39.1.el10_2, kernel-rt-debug-core 6.12.0-211.39.1.el10_2, kernel-rt-modules-core 6.12.0-211.39.1.el10_2, kernel-rt-debug-modules 6.12.0-211.39.1.el10_2, +4 more
    fixed: vendor fix RHSA-2026:45114
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt 5.14.0-284.188.1.rt14.473.el9_2, kernel-rt-kvm 5.14.0-284.188.1.rt14.473.el9_2, kernel-rt-core 5.14.0-284.188.1.rt14.473.el9_2, kernel-rt-modules 5.14.0-284.188.1.rt14.473.el9_2, kernel-rt-debug-kvm 5.14.0-284.188.1.rt14.473.el9_2, kernel-rt-debug-core 5.14.0-284.188.1.rt14.473.el9_2, +6 more
    fixed: vendor fix RHSA-2026:59663
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) kernel-rt 5.14.0-427.153.1.el9_4, kernel-rt-kvm 5.14.0-427.153.1.el9_4, kernel-rt-core 5.14.0-427.153.1.el9_4, kernel-rt-modules 5.14.0-427.153.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.153.1.el9_4, kernel-rt-debug-core 5.14.0-427.153.1.el9_4, +6 more
    fixed: vendor fix RHSA-2026:73645
  • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt 6.12.0-55.98.1.el10_0, kernel-rt-kvm 6.12.0-55.98.1.el10_0, kernel-rt-core 6.12.0-55.98.1.el10_0, kernel-rt-modules 6.12.0-55.98.1.el10_0, kernel-rt-debug-kvm 6.12.0-55.98.1.el10_0, kernel-rt-debug-core 6.12.0-55.98.1.el10_0, +6 more
    fixed: vendor fix RHSA-2026:55445
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt 5.14.0-570.135.1.el9_6, kernel-rt-kvm 5.14.0-570.135.1.el9_6, kernel-rt-core 5.14.0-570.135.1.el9_6, kernel-rt-modules 5.14.0-570.135.1.el9_6, kernel-rt-debug-kvm 5.14.0-570.135.1.el9_6, kernel-rt-debug-core 5.14.0-570.135.1.el9_6, +6 more
    fixed: vendor fix RHSA-2026:56574

3 more fixed 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
5d ago

Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.3 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
NVD 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 6.3 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected products

  • Linux Linux
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle 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 Extended Update Support Long-Life Add-On
  • 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 9.2 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 6

Classification

Weakness
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.