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Fencer Vulns
medium 6.5

CVE-2023-28746 json

Information exposure through microarchitectural state after transient execution from some register files for some Intel(R) Atom(R) Processo…

published 2024-03-14 2 y ago modified 2026-10-14 25 d ago also EUVD-2023-32384

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

Summary

Information exposure through microarchitectural state after transient execution from some register files for some Intel(R) Atom(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Patch / fix

  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem V1.1.1
  • xen Debian 12 4.17.5+23-ga4e5191dc0-1
  • xen Debian 14, Debian 13 4.19.1-1
  • linux Debian 12 6.1.82-1
  • linux Debian 14, Debian 13 6.7.9-2
  • intel-microcode Debian 12 3.20240312.1~deb12u1
  • intel-microcode Debian 14, Debian 13 3.20240312.1

debian advisories DEBIAN-CVE-2023-28746

  • intel-microcode Ubuntu 20.04 LTS 3.20240514.0ubuntu0.20.04.1
  • intel-microcode Ubuntu 22.04 LTS 3.20240514.0ubuntu0.22.04.1
  • intel-microcode Ubuntu Pro 16.04 LTS 3.20240514.0ubuntu0.16.04.1+esm1
  • intel-microcode Ubuntu Pro 18.04 LTS 3.20240514.0ubuntu0.18.04.1+esm1

ubuntu advisories UBUNTU-CVE-2023-28746

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

  • microcode_ctl RHEL 9 4:20230808-2.20240531.1.el9_4
  • microcode_ctl RHEL 9 4:20240910-1.el9_5
  • kernel RHEL 9 5.14.0-427.40.1.el9_4
  • rv RHEL 9 5.14.0-427.40.1.el9_4
  • perf RHEL 9 5.14.0-427.40.1.el9_4
  • rtla RHEL 9 5.14.0-427.40.1.el9_4
  • bpftool RHEL 9 7.3.0-427.40.1.el9_4
  • libperf RHEL 9 5.14.0-427.40.1.el9_4

red hat advisories RHEA-2024:7620RHSA-2024:9401RHSA-2024:8158RHSA-2024:8157RHSA-2024:8162RHSA-2024:5101

  • ucode-intel Linux Micro 6.0 20240813-1.1
  • kernel-syms SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-122.216.1
  • kernel-source SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-122.216.1
  • kernel-default SLES for SAP 12 SP5, SLES 12 SP5, SLE Workstation Extension 12 SP5 +2 more 4.12.14-122.216.1
  • kernel-obs-build SLE Software Development Kit 12 SP5 4.12.14-122.216.1
  • kernel-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.182.1
  • kernel-syms-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.182.1
  • kernel-source-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.182.1

suse advisories SUSE-SU-2025:1032-1SUSE-SU-2025:20020-1SUSE-SU-2024:2535-1SUSE-SU-2024:1870-1SUSE-SU-2024:1669-1SUSE-SU-2024:1643-1

  • spectre-meltdown-checker openSUSE Tumbleweed 26.36.0602723-1.1
  • kernel-source-longterm openSUSE Tumbleweed 6.12.11-1.1
  • ucode-intel openSUSE Tumbleweed 20240312-1.1
  • kernel-source openSUSE Tumbleweed 6.8.1-1.1
  • xen openSUSE Tumbleweed 4.18.1_02-1.1

opensuse advisories openSUSE-SU-2026:11242-1openSUSE-SU-2025:14705-1openSUSE-SU-2024:13769-1openSUSE-SU-2024:13785-1openSUSE-SU-2024:13801-1

  • microcode_ctl AlmaLinux 9 4:20240910-1.el9_5
  • kernel AlmaLinux 9 5.14.0-427.40.1.el9_4
  • rv AlmaLinux 9 5.14.0-427.40.1.el9_4
  • perf AlmaLinux 9 5.14.0-427.40.1.el9_4
  • rtla AlmaLinux 9 5.14.0-427.40.1.el9_4
  • bpftool AlmaLinux 9 7.3.0-427.40.1.el9_4
  • libperf AlmaLinux 9 5.14.0-427.40.1.el9_4
  • kernel-rt AlmaLinux 9 5.14.0-427.40.1.el9_4

almalinux advisories ALSA-2024:9401ALSA-2024:8162ALSA-2024:5101

  • microcode_ctl Rocky Linux 9 4:20240910-1.el9_5
  • kernel Rocky Linux 9 5.14.0-427.40.1.el9_4
  • kernel Rocky Linux 8 4.18.0-553.16.1.el8_10.cloud.0.1
  • kernel Rocky Linux 8 4.18.0-553.16.1.el8_10

rocky linux advisories RLSA-2024:9401RLSA-2024:8162RXSA-2024:5101RLSA-2024:5101

  • xen Alpine 3.17, Alpine 3.16 4.16.5-r7
  • xen Alpine 3.18 4.17.3-r1
  • xen Alpine 3.19 4.18.0-r4
  • xen Alpine 3.24, Alpine 3.23, Alpine 3.22 +2 more 4.18.0-r5
  • intel-ucode Alpine 3.18, Alpine 3.17 20240813-r0
  • intel-ucode Alpine 3.24, Alpine 3.23, Alpine 3.22 +3 more 20240312-r0

alpine advisories ALPINE-CVE-2023-28746

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2023-28746 updated cvss 6.5

kernel: Local information disclosure on Intel(R) Atom(R) processors

  • Red Hat Enterprise Linux 6 perf, kernel, kernel-rt, python-perf, kernel-kdump, microcode_ctl, +3 more
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 microcode_ctl
    affected: no fix available
  • Red Hat Enterprise Linux 8 kernel-rt, kernel-rt-kvm, microcode_ctl, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, +7 more
    affected: no fix available, no fix planned “Will not fix”
  • 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 planned “Will not fix”
  • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.88.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.88.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.88.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.88.1.el9_2
    fixed: vendor fix RHSA-2024:8157
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-427.40.1.el9_4, perf 5.14.0-427.40.1.el9_4, rtla 5.14.0-427.40.1.el9_4, kernel-devel-matched 5.14.0-427.40.1.el9_4, kernel-64k-devel-matched 5.14.0-427.40.1.el9_4, kernel-debug-devel-matched 5.14.0-427.40.1.el9_4, +6 more
    fixed: vendor fix RHSA-2024:8162
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.88.1.el9_2, rtla 5.14.0-284.88.1.el9_2, kernel-devel-matched 5.14.0-284.88.1.el9_2, kernel-64k-devel-matched 5.14.0-284.88.1.el9_2, kernel-debug-devel-matched 5.14.0-284.88.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.88.1.el9_2, +5 more
    fixed: vendor fix RHSA-2024:8157
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.16.1.el8_10, kernel 4.18.0-553.16.1.el8_10, bpftool 4.18.0-553.16.1.el8_10, kernel-core 4.18.0-553.16.1.el8_10, kernel-tools 4.18.0-553.16.1.el8_10, python3-perf 4.18.0-553.16.1.el8_10, +15 more
    fixed: vendor fix RHSA-2024:5101
show 7 more
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.3.0-427.40.1.el9_4, kernel 5.14.0-427.40.1.el9_4, microcode_ctl 20240910-1.el9_5, kernel-64k 5.14.0-427.40.1.el9_4, kernel-core 5.14.0-427.40.1.el9_4, kernel-tools 5.14.0-427.40.1.el9_4, +30 more
    fixed: vendor fix RHSA-2024:8162
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.88.1.el9_2, kernel 5.14.0-284.88.1.el9_2, kernel-64k 5.14.0-284.88.1.el9_2, kernel-core 5.14.0-284.88.1.el9_2, kernel-tools 5.14.0-284.88.1.el9_2, python3-perf 5.14.0-284.88.1.el9_2, +28 more
    fixed: vendor fix RHSA-2024:8157
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.16.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.16.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.16.1.el8_10
    fixed: vendor fix RHSA-2024:5101
  • Red Hat Enterprise Linux CRB (v. 9) libperf 5.14.0-427.40.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.40.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.40.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.40.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.40.1.el9_4 Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-427.40.1.el9_4, kernel-rt-kvm 5.14.0-427.40.1.el9_4, kernel-rt-core 5.14.0-427.40.1.el9_4, kernel-rt-modules 5.14.0-427.40.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.40.1.el9_4, kernel-rt-debug-core 5.14.0-427.40.1.el9_4, +6 more
    fixed: vendor fix RHSA-2024:8162
  • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.88.1.rt14.373.el9_2, kernel-rt-core 5.14.0-284.88.1.rt14.373.el9_2, kernel-rt-modules 5.14.0-284.88.1.rt14.373.el9_2, kernel-rt-debug-core 5.14.0-284.88.1.rt14.373.el9_2, kernel-rt-modules-core 5.14.0-284.88.1.rt14.373.el9_2, kernel-rt-debug-modules 5.14.0-284.88.1.rt14.373.el9_2, +4 more Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.88.1.rt14.373.el9_2, kernel-rt-kvm 5.14.0-284.88.1.rt14.373.el9_2, kernel-rt-core 5.14.0-284.88.1.rt14.373.el9_2, kernel-rt-modules 5.14.0-284.88.1.rt14.373.el9_2, kernel-rt-debug-kvm 5.14.0-284.88.1.rt14.373.el9_2, kernel-rt-debug-core 5.14.0-284.88.1.rt14.373.el9_2, +6 more
    fixed: vendor fix RHSA-2024:8158
  • Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-427.40.1.el9_4, kernel-rt-core 5.14.0-427.40.1.el9_4, kernel-rt-modules 5.14.0-427.40.1.el9_4, kernel-rt-debug-core 5.14.0-427.40.1.el9_4, kernel-rt-modules-core 5.14.0-427.40.1.el9_4, kernel-rt-debug-modules 5.14.0-427.40.1.el9_4, +4 more
    fixed: vendor fix RHSA-2024:8162
  • Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-doc 5.14.0-284.88.1.el9_2
    not affected: vulnerable code not present

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-24-102-01 updated cvss 6.5

Siemens SIMATIC S7-1500 TM MFP

  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
    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
2 y ago

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Affected products

  • n/a Intel(R) Atom(R) Processors
  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Classification

Weakness
  • CWE-1342 Information Exposure through Microarchitectural State after Transient Execution

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.