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Fencer Vulns
high 7.0

CVE-2022-41222 json

mm/mremap.c in the Linux kernel before 5.13.3 has a use-after-free via a stale TLB because an rmap lock is not held during a PUD move.

published 2022-09-21 4 y ago modified 2026-10-14 25 d ago also EUVD-2022-44463

cvss
7.0
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 42%
public exploits
0
none known

Summary

mm/mremap.c in the Linux kernel before 5.13.3 has a use-after-free via a stale TLB because an rmap lock is not held during a PUD move.

Patch / fix

  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem V1.1
  • linux Debian 14, Debian 13, Debian 12 5.14.6-1

debian advisories DEBIAN-CVE-2022-41222

  • linux Ubuntu 20.04 LTS 5.4.0-132.148
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1089.97
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1093.102
  • linux-gke Ubuntu 20.04 LTS 5.4.0-1087.94
  • linux-ibm Ubuntu 20.04 LTS 5.4.0-1037.42
  • linux-iot Ubuntu 20.04 LTS 5.4.0-1006.8
  • linux-kvm Ubuntu 20.04 LTS 5.4.0-1079.85
  • linux-azure Ubuntu 20.04 LTS 5.4.0-1095.101

ubuntu advisories UBUNTU-CVE-2022-41222

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

  • redhat-virtualization-host rhev hypervisor 4.4 4.5.3-202306050942_8.6
  • redhat-virtualization-host-image-update rhev hypervisor 4.4 4.5.3-202306050942_8.6
  • perf rhev hypervisor 4.4, RHEL 8.6 EUS 4.18.0-372.46.1.el8_6
  • kernel-rt RHEL 8 4.18.0-425.13.1.rt7.223.el8_7
  • kernel-rt-kvm RHEL 8 4.18.0-425.13.1.rt7.223.el8_7
  • kernel-rt-core RHEL 8 4.18.0-425.13.1.rt7.223.el8_7
  • kernel-rt-modules RHEL 8 4.18.0-425.13.1.rt7.223.el8_7
  • kernel-rt-debug-kvm RHEL 8 4.18.0-425.13.1.rt7.223.el8_7

red hat advisories RHSA-2023:3491RHSA-2023:1192RHSA-2023:1130RHSA-2023:0854RHSA-2023:0832RHSA-2023:0839

  • 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
  • dtb-aarch64 openSUSE Leap 15.4, openSUSE Leap 15.3 5.3.18-150300.59.98.1
  • kernel-64kb SLE Module for Basesystem 15 SP3, openSUSE Leap 15.3 5.3.18-150300.59.98.1
  • kernel-syms SLE Module for Development Tools 15 SP3, openSUSE Leap 15.3 5.3.18-150300.59.98.1
  • kernel-obs-qa openSUSE Leap 15.3 5.3.18-150300.59.98.1

suse advisories SUSE-SU-2022:3809-1SUSE-SU-2022:3775-1SUSE-SU-2022:3704-1SUSE-SU-2022:3657-1SUSE-SU-2022:3648-1SUSE-SU-2022:3609-1

  • kernel AlmaLinux 8 4.18.0-425.13.1.el8_7
  • perf AlmaLinux 8 4.18.0-425.13.1.el8_7
  • bpftool AlmaLinux 8 4.18.0-425.13.1.el8_7
  • kernel-core AlmaLinux 8 4.18.0-425.13.1.el8_7
  • kernel-tools AlmaLinux 8 4.18.0-425.13.1.el8_7
  • python3-perf AlmaLinux 8 4.18.0-425.13.1.el8_7
  • kernel-modules AlmaLinux 8 4.18.0-425.13.1.el8_7
  • kernel-zfcpdump AlmaLinux 8 4.18.0-425.13.1.el8_7

almalinux advisories ALSA-2023:0832ALSA-2023:0854

  • kernel Rocky Linux 8 4.18.0-425.13.1.el8_7.cloud
  • kernel-rt Rocky Linux 8 4.18.0-425.13.1.rt7.223.el8_7
  • kernel Rocky Linux 8 4.18.0-425.13.1.el8_7

rocky linux advisories RXSA-2023:0832RLSA-2023:0854RLSA-2023:0832

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-2022-41222 updated cvss 7.0

kernel: mm/mremap.c use-after-free vulnerability

  • Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-425.13.1.el8_7, kernel-debuginfo-common-aarch64 4.18.0-425.13.1.el8_7, kernel-debuginfo-common-ppc64le 4.18.0-425.13.1.el8_7
    fixed: vendor fix RHSA-2023:0832
  • Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-debuginfo-common-x86_64 4.18.0-372.46.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.46.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.46.1.el8_6
    fixed: vendor fix RHSA-2023:1130
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-425.13.1.el8_7, kernel 4.18.0-425.13.1.el8_7, bpftool 4.18.0-425.13.1.el8_7, kernel-core 4.18.0-425.13.1.el8_7, kernel-tools 4.18.0-425.13.1.el8_7, python3-perf 4.18.0-425.13.1.el8_7, +17 more
    fixed: vendor fix RHSA-2023:0832
  • Red Hat Enterprise Linux BaseOS EUS (v.8.6) perf 4.18.0-372.46.1.el8_6, kernel 4.18.0-372.46.1.el8_6, bpftool 4.18.0-372.46.1.el8_6, kernel-core 4.18.0-372.46.1.el8_6, kernel-tools 4.18.0-372.46.1.el8_6, python3-perf 4.18.0-372.46.1.el8_6, +20 more
    fixed: vendor fix RHSA-2023:1130
  • Red Hat Enterprise Linux for Real Time (v. 8) kernel-rt 4.18.0-425.13.1.rt7.223.el8_7, kernel-rt-core 4.18.0-425.13.1.rt7.223.el8_7, kernel-rt-modules 4.18.0-425.13.1.rt7.223.el8_7, kernel-rt-debug-core 4.18.0-425.13.1.rt7.223.el8_7, kernel-rt-debug-modules 4.18.0-425.13.1.rt7.223.el8_7, kernel-rt-modules-extra 4.18.0-425.13.1.rt7.223.el8_7, +2 more Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-425.13.1.rt7.223.el8_7, kernel-rt-kvm 4.18.0-425.13.1.rt7.223.el8_7, kernel-rt-core 4.18.0-425.13.1.rt7.223.el8_7, kernel-rt-modules 4.18.0-425.13.1.rt7.223.el8_7, kernel-rt-debug-kvm 4.18.0-425.13.1.rt7.223.el8_7, kernel-rt-debug-core 4.18.0-425.13.1.rt7.223.el8_7, +4 more
    fixed: vendor fix RHSA-2023:0854
  • Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.46.1.el8_6, redhat-virtualization-host 4.5.3-202306050942_8.6, kernel-debuginfo-common-x86_64 4.18.0-372.46.1.el8_6, redhat-virtualization-host-image-update 4.5.3-202306050942_8.6
    fixed: vendor fix RHSA-2023:1130
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more Red Hat RHEL 8-based RHEV-H for RHEV 4 (build requirements) redhat-release-virtualization-host 4.5.3-7.el8ev, redhat-release-virtualization-host-content 4.5.3-7.el8ev, redhat-virtualization-host-image-update-placeholder 4.5.3-7.el8ev
    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-23-166-10 updated cvss 7.0

Siemens SIMATIC S7-1500 TM MFP BIOS

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-23-166-11 updated cvss 7.0

Siemens SIMATIC S7-1500 TM MFP Linux Kernel

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
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
17 mo ago

Exploit prediction

0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugs.chromium.org https://bugs.chromium.org/p/project-zero/issues/detail?id=2347 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

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

Classification

Weakness
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.