medium 5.5

CVE-2022-26373 json

Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow an authorized user to potentiall…

published 2022-08-18 4y ago modified 2026-10-14 26d ago also EUVD-2022-30932

cvss: 5.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits: 0; none known

Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.

Patch / fix

fixed in 1 distros 6

Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem V1.1

debian ubuntu red hat suse almalinux rocky linux

linux Debian 14, Debian 13, Debian 12 5.18.16-1

debian advisories DEBIAN-CVE-2022-26373

linux Ubuntu 18.04 LTS 4.15.0-204.215
linux Ubuntu 20.04 LTS 5.4.0-128.144
linux Ubuntu 22.04 LTS 5.15.0-50.56
linux-aws Ubuntu 18.04 LTS 4.15.0-1150.163
linux-aws Ubuntu 20.04 LTS 5.4.0-1086.93
linux-aws Ubuntu 22.04 LTS 5.15.0-1021.25
linux-gcp Ubuntu 20.04 LTS 5.4.0-1090.98
linux-gcp Ubuntu 22.04 LTS 5.15.0-1019.25

ubuntu advisories UBUNTU-CVE-2022-26373

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 5.14.0-162.6.1.el9_1
perf RHEL 9 5.14.0-162.6.1.el9_1
bpftool RHEL 9 5.14.0-162.6.1.el9_1
kernel-core RHEL 9 5.14.0-162.6.1.el9_1
kernel-tools RHEL 9 5.14.0-162.6.1.el9_1
python3-perf RHEL 9 5.14.0-162.6.1.el9_1
kernel-modules RHEL 9 5.14.0-162.6.1.el9_1
kernel-zfcpdump RHEL 9 5.14.0-162.6.1.el9_1

red hat advisories RHSA-2022:8267 RHSA-2022:7933 RHSA-2022:8973 RHSA-2022:8974 RHSA-2022:7683 RHSA-2023:0440

kernel-rt Real Time Module 15 SP4, openSUSE Leap 15.4 5.14.21-150400.15.5.1
kernel-syms-rt Real Time Module 15 SP4, openSUSE Leap 15.4 5.14.21-150400.15.5.1
kernel-rt_debug Real Time Module 15 SP4, openSUSE Leap 15.4 5.14.21-150400.15.5.1
kernel-source-rt Real Time Module 15 SP4, openSUSE Leap 15.4 5.14.21-150400.15.5.1
kernel-rt SLE Micro 5.2, SLE Micro 5.1, Real Time Module 15 SP3 +1 more 5.3.18-150300.106.1
kernel-syms-rt Real Time Module 15 SP3 5.3.18-150300.106.1
kernel-rt_debug Real Time Module 15 SP3 5.3.18-150300.106.1
kernel-source-rt Real Time Module 15 SP3 5.3.18-150300.106.1

suse advisories SUSE-SU-2025:1293-1 SUSE-SU-2022:4617-1 SUSE-SU-2022:3809-1 SUSE-SU-2022:3609-1 SUSE-SU-2022:3450-1 SUSE-SU-2022:3422-1

kernel-rt AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
kernel-rt-kvm AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
kernel-rt-core AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
kernel-rt-modules AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
kernel-rt-debug-kvm AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
kernel-rt-debug-core AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
kernel-rt-debug-modules AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
kernel-rt-modules-extra AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1

almalinux advisories ALSA-2022:7933 ALSA-2022:8267 ALSA-2022:7444 ALSA-2022:7683

kernel Rocky Linux 8 4.18.0-425.3.1.el8
kernel-rt Rocky Linux 8 4.18.0-425.3.1.rt7.213.el8

rocky linux advisories RLSA-2022:7683 RLSA-2022:7444

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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-2022-26373 updated 2026-11-07 cvss 5.5

hw: cpu: Intel: Post-barrier Return Stack Buffer Predictions

Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
affected: no fix planned “Will not fix”
Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-425.3.1.el8, kernel-debuginfo-common-aarch64 4.18.0-425.3.1.el8, kernel-debuginfo-common-ppc64le 4.18.0-425.3.1.el8
fixed: vendor fix RHSA-2022:7683
Red Hat CodeReady Linux Builder (v. 9) kernel-debuginfo-common-s390x 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-x86_64 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-aarch64 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-ppc64le 5.14.0-162.6.1.el9_1
fixed: vendor fix RHSA-2022:8267
Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-debuginfo-common-x86_64 4.18.0-372.41.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.41.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.41.1.el8_6
fixed: vendor fix RHSA-2023:0440
Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-debuginfo-common-s390x 5.14.0-70.36.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.36.1.el9_0, kernel-debuginfo-common-aarch64 5.14.0-70.36.1.el9_0, kernel-debuginfo-common-ppc64le 5.14.0-70.36.1.el9_0
fixed: vendor fix RHSA-2022:8973
Red Hat Enterprise Linux AppStream (v. 9) perf 5.14.0-162.6.1.el9_1, kernel-devel-matched 5.14.0-162.6.1.el9_1, kernel-debug-devel-matched 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-s390x 5.14.0-162.6.1.el9_1, kernel-zfcpdump-devel-matched 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-x86_64 5.14.0-162.6.1.el9_1, +2 more
fixed: vendor fix RHSA-2022:8267
Red Hat Enterprise Linux AppStream EUS (v.9.0) perf 5.14.0-70.36.1.el9_0, kernel-devel-matched 5.14.0-70.36.1.el9_0, kernel-debug-devel-matched 5.14.0-70.36.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.36.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.36.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.36.1.el9_0, +2 more
fixed: vendor fix RHSA-2022:8973
Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-425.3.1.el8, kernel 4.18.0-425.3.1.el8, bpftool 4.18.0-425.3.1.el8, kernel-core 4.18.0-425.3.1.el8, kernel-tools 4.18.0-425.3.1.el8, python3-perf 4.18.0-425.3.1.el8, +15 more
fixed: vendor fix RHSA-2022:7683

show 13 more

Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-162.6.1.el9_1, bpftool 5.14.0-162.6.1.el9_1, kernel-core 5.14.0-162.6.1.el9_1, kernel-tools 5.14.0-162.6.1.el9_1, python3-perf 5.14.0-162.6.1.el9_1, kernel-modules 5.14.0-162.6.1.el9_1, +14 more
fixed: vendor fix RHSA-2022:8267
Red Hat Enterprise Linux BaseOS EUS (v.8.6) perf 4.18.0-372.41.1.el8_6, kernel 4.18.0-372.41.1.el8_6, bpftool 4.18.0-372.41.1.el8_6, kernel-core 4.18.0-372.41.1.el8_6, kernel-tools 4.18.0-372.41.1.el8_6, python3-perf 4.18.0-372.41.1.el8_6, +15 more
fixed: vendor fix RHSA-2023:0440
Red Hat Enterprise Linux BaseOS EUS (v.9.0) kernel 5.14.0-70.36.1.el9_0, bpftool 5.14.0-70.36.1.el9_0, kernel-core 5.14.0-70.36.1.el9_0, kernel-tools 5.14.0-70.36.1.el9_0, python3-perf 5.14.0-70.36.1.el9_0, kernel-modules 5.14.0-70.36.1.el9_0, +14 more
fixed: vendor fix RHSA-2022:8973
Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-1160.80.1.el7, kernel 3.10.0-1160.80.1.el7, bpftool 3.10.0-1160.80.1.el7, python-perf 3.10.0-1160.80.1.el7, kernel-tools 3.10.0-1160.80.1.el7, kernel-tools-libs 3.10.0-1160.80.1.el7, +2 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.80.1.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.80.1.el7
fixed: vendor fix RHSA-2022:7337
Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-1160.80.1.rt56.1225.el7, kernel-rt-trace 3.10.0-1160.80.1.rt56.1225.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.80.1.rt56.1225.el7 Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-1160.80.1.rt56.1225.el7, kernel-rt-kvm 3.10.0-1160.80.1.rt56.1225.el7, kernel-rt-trace 3.10.0-1160.80.1.rt56.1225.el7, kernel-rt-debug-kvm 3.10.0-1160.80.1.rt56.1225.el7, kernel-rt-trace-kvm 3.10.0-1160.80.1.rt56.1225.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.80.1.rt56.1225.el7
fixed: vendor fix RHSA-2022:7338
Red Hat Enterprise Linux Real Time (v. 8) kernel-rt 4.18.0-425.3.1.rt7.213.el8, kernel-rt-core 4.18.0-425.3.1.rt7.213.el8, kernel-rt-modules 4.18.0-425.3.1.rt7.213.el8, kernel-rt-debug-core 4.18.0-425.3.1.rt7.213.el8, kernel-rt-debug-modules 4.18.0-425.3.1.rt7.213.el8, kernel-rt-modules-extra 4.18.0-425.3.1.rt7.213.el8, +2 more
fixed: vendor fix RHSA-2022:7444
Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-core 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-modules 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-core 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-modules 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-modules-extra 5.14.0-162.6.1.rt21.168.el9_1, +2 more
fixed: vendor fix RHSA-2022:7933
Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-core 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-modules 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-debug-core 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-debug-modules 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-modules-extra 5.14.0-70.36.1.rt21.108.el9_0, +2 more
fixed: vendor fix RHSA-2022:8974
Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-425.3.1.rt7.213.el8, kernel-rt-kvm 4.18.0-425.3.1.rt7.213.el8, kernel-rt-core 4.18.0-425.3.1.rt7.213.el8, kernel-rt-modules 4.18.0-425.3.1.rt7.213.el8, kernel-rt-debug-kvm 4.18.0-425.3.1.rt7.213.el8, kernel-rt-debug-core 4.18.0-425.3.1.rt7.213.el8, +4 more
fixed: vendor fix RHSA-2022:7444
Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-kvm 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-core 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-modules 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-kvm 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-core 5.14.0-162.6.1.rt21.168.el9_1, +4 more
fixed: vendor fix RHSA-2022:7933
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-kvm 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-core 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-modules 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-debug-kvm 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-debug-core 5.14.0-70.36.1.rt21.108.el9_0, +4 more
fixed: vendor fix RHSA-2022:8974
Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-1160.80.1.el7, kernel 3.10.0-1160.80.1.el7, bpftool 3.10.0-1160.80.1.el7, python-perf 3.10.0-1160.80.1.el7, kernel-kdump 3.10.0-1160.80.1.el7, kernel-tools 3.10.0-1160.80.1.el7, +7 more Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-1160.80.1.el7, kernel-debuginfo-common-x86_64 3.10.0-1160.80.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-1160.80.1.el7 Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-1160.80.1.el7, kernel 3.10.0-1160.80.1.el7, bpftool 3.10.0-1160.80.1.el7, python-perf 3.10.0-1160.80.1.el7, kernel-tools 3.10.0-1160.80.1.el7, kernel-tools-libs 3.10.0-1160.80.1.el7, +2 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.80.1.el7
fixed: vendor fix RHSA-2022:7337
Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.41.1.el8_6, kernel-debuginfo-common-x86_64 4.18.0-372.41.1.el8_6
fixed: vendor fix RHSA-2023:0440

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-23-166-11 updated 2024-04-09 cvss 5.5

Siemens SIMATIC S7-1500 TM MFP Linux Kernel

Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem <V1.1
affected: fixed in V1.1, workaround support.industry.siemens.com

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: last yr. (2025-04-23)

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

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

Affected products

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

References

intel.com /content/www/us/en/security-center/advisory/intel-sa-00706.html
vendor-advisory
lists.debian.org /debian-lts-announce/2022/09/msg00011.html
mailing-list, third-party-advisory
lists.debian.org /debian-lts-announce/2022/10/msg00000.html
mailing-list, third-party-advisory
security.netapp.com /advisory/ntap-20221007-0005/
third-party-advisory
cert-portal.siemens.com /productcert/html/ssa-794697.html

Sources

CVE List CVE-2022-26373
NVD CVE-2022-26373

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.

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