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Fencer Vulns
medium 5.5

CVE-2022-42703 json

mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.

published 2022-10-09 4 y ago modified 2026-10-14 25 d ago also EUVD-2022-45769

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits
0
none known

Summary

mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.

Patch / fix

  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem V1.1
  • linux Debian 14, Debian 13, Debian 12 5.19.11-1

debian advisories DEBIAN-CVE-2022-42703

  • linux Ubuntu 18.04 LTS 4.15.0-200.211
  • linux Ubuntu 20.04 LTS 5.4.0-132.148
  • linux Ubuntu 22.04 LTS 5.15.0-56.62
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1146.158
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1089.97
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1026.30
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1093.102
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1025.32

ubuntu advisories UBUNTU-CVE-2022-42703

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 5.14.0-284.11.1.el9_2
  • perf RHEL 9 5.14.0-284.11.1.el9_2
  • rtla RHEL 9 5.14.0-284.11.1.el9_2
  • bpftool RHEL 9 7.0.0-284.11.1.el9_2
  • kernel-64k RHEL 9 5.14.0-284.11.1.el9_2
  • kernel-core RHEL 9 5.14.0-284.11.1.el9_2
  • kernel-tools RHEL 9 5.14.0-284.11.1.el9_2
  • python3-perf RHEL 9 5.14.0-284.11.1.el9_2

red hat advisories RHSA-2023:4138RHSA-2023:4137RHSA-2023:2458RHSA-2023:2148RHSA-2023:2736RHSA-2023:2951

  • 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-syms SLES for SAP 12 SP4, SLES 12 SP4-LTSS, OpenStack Cloud Crowbar 9 +1 more 4.12.14-95.114.1
  • kernel-source SLES for SAP 12 SP4, SLES 12 SP4-LTSS, OpenStack Cloud Crowbar 9 +1 more 4.12.14-95.114.1
  • kernel-default SLES for SAP 12 SP4, SLES 12 SP4-LTSS, SLE Live Patching 12 SP4 +3 more 4.12.14-95.114.1
  • kernel-rt SLE Real Time 12 SP5 4.12.14-10.109.1

suse advisories SUSE-SU-2022:4617-1SUSE-SU-2022:4615-1SUSE-SU-2022:4614-1SUSE-SU-2022:4611-1SUSE-SU-2022:4589-1SUSE-SU-2022:4574-1

  • kernel-rt AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
  • kernel-rt-kvm AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
  • kernel-rt-core AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
  • kernel-rt-modules AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
  • kernel-rt-debug-kvm AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
  • kernel-rt-debug-core AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
  • kernel-rt-debug-modules AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
  • kernel-rt-modules-extra AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8

almalinux advisories ALSA-2023:2736ALSA-2023:2951ALSA-2023:2148ALSA-2023:2458

  • kernel CBL-Mariner 2.0 5.15.74.1-3

azure linux advisories AZL-11094

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

  • linux-lts Arch Linux 6.2-1
  • linux-hardened Arch Linux 6.2-1
  • linux-zen Arch Linux 6.2-1
  • linux Arch Linux 6.2-1

arch linux advisories AVG-2834AVG-2835AVG-2836AVG-2837

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-2022-42703 updated cvss 5.5

kernel: use-after-free related to leaf anon_vma double reuse

  • 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 CodeReady Linux Builder EUS (v.8.6) kernel-debuginfo-common-x86_64 4.18.0-372.57.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.57.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.57.1.el8_6
    fixed: vendor fix RHSA-2023:3388
  • Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-debuginfo-common-s390x 5.14.0-70.64.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.64.1.el9_0, kernel-debuginfo-common-aarch64 5.14.0-70.64.1.el9_0, kernel-debuginfo-common-ppc64le 5.14.0-70.64.1.el9_0
    fixed: vendor fix RHSA-2023:4137
  • Red Hat Enterprise Linux AppStream (v. 9) perf 5.14.0-284.11.1.el9_2, rtla 5.14.0-284.11.1.el9_2, kernel-devel-matched 5.14.0-284.11.1.el9_2, kernel-64k-devel-matched 5.14.0-284.11.1.el9_2, kernel-debug-devel-matched 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.11.1.el9_2, +5 more
    fixed: vendor fix RHSA-2023:2458
  • Red Hat Enterprise Linux AppStream EUS (v.9.0) perf 5.14.0-70.64.1.el9_0, kernel-devel-matched 5.14.0-70.64.1.el9_0, kernel-debug-devel-matched 5.14.0-70.64.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.64.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.64.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.64.1.el9_0, +2 more
    fixed: vendor fix RHSA-2023:4137
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-477.10.1.el8_8, kernel 4.18.0-477.10.1.el8_8, bpftool 4.18.0-477.10.1.el8_8, kernel-core 4.18.0-477.10.1.el8_8, kernel-tools 4.18.0-477.10.1.el8_8, python3-perf 4.18.0-477.10.1.el8_8, +15 more
    fixed: vendor fix RHSA-2023:2951
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.0.0-284.11.1.el9_2, kernel 5.14.0-284.11.1.el9_2, kernel-64k 5.14.0-284.11.1.el9_2, kernel-core 5.14.0-284.11.1.el9_2, kernel-tools 5.14.0-284.11.1.el9_2, python3-perf 5.14.0-284.11.1.el9_2, +28 more
    fixed: vendor fix RHSA-2023:2458
  • Red Hat Enterprise Linux BaseOS EUS (v.8.6) perf 4.18.0-372.57.1.el8_6, kernel 4.18.0-372.57.1.el8_6, bpftool 4.18.0-372.57.1.el8_6, kernel-core 4.18.0-372.57.1.el8_6, kernel-tools 4.18.0-372.57.1.el8_6, python3-perf 4.18.0-372.57.1.el8_6, +15 more
    fixed: vendor fix RHSA-2023:3388
show 12 more
  • Red Hat Enterprise Linux BaseOS EUS (v.9.0) kernel 5.14.0-70.64.1.el9_0, bpftool 5.14.0-70.64.1.el9_0, kernel-core 5.14.0-70.64.1.el9_0, kernel-tools 5.14.0-70.64.1.el9_0, python3-perf 5.14.0-70.64.1.el9_0, kernel-modules 5.14.0-70.64.1.el9_0, +14 more
    fixed: vendor fix RHSA-2023:4137
  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-1160.88.1.el7, kernel 3.10.0-1160.88.1.el7, bpftool 3.10.0-1160.88.1.el7, python-perf 3.10.0-1160.88.1.el7, kernel-tools 3.10.0-1160.88.1.el7, kernel-tools-libs 3.10.0-1160.88.1.el7, +2 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.88.1.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.88.1.el7
    fixed: vendor fix RHSA-2023:1091
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-477.10.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.10.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.10.1.el8_8
    fixed: vendor fix RHSA-2023:2951
  • Red Hat Enterprise Linux CRB (v. 9) kernel-debuginfo-common-s390x 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.11.1.el9_2
    fixed: vendor fix RHSA-2023:2458
  • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-1160.88.1.rt56.1233.el7, kernel-rt-trace 3.10.0-1160.88.1.rt56.1233.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.88.1.rt56.1233.el7 Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-1160.88.1.rt56.1233.el7, kernel-rt-kvm 3.10.0-1160.88.1.rt56.1233.el7, kernel-rt-trace 3.10.0-1160.88.1.rt56.1233.el7, kernel-rt-debug-kvm 3.10.0-1160.88.1.rt56.1233.el7, kernel-rt-trace-kvm 3.10.0-1160.88.1.rt56.1233.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.88.1.rt56.1233.el7
    fixed: vendor fix RHSA-2023:1092
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-kvm 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-core 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-modules 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-kvm 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-core 4.18.0-477.10.1.rt7.274.el8_8, +4 more
    fixed: vendor fix RHSA-2023:2736
  • Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-kvm 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-core 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-modules 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-debug-kvm 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-debug-core 5.14.0-284.11.1.rt14.296.el9_2, +6 more
    fixed: vendor fix RHSA-2023:2148
  • Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt 5.14.0-70.64.1.rt21.135.el9_0, kernel-rt-core 5.14.0-70.64.1.rt21.135.el9_0, kernel-rt-modules 5.14.0-70.64.1.rt21.135.el9_0, kernel-rt-debug-core 5.14.0-70.64.1.rt21.135.el9_0, kernel-rt-debug-modules 5.14.0-70.64.1.rt21.135.el9_0, kernel-rt-modules-extra 5.14.0-70.64.1.rt21.135.el9_0, +2 more Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt 5.14.0-70.64.1.rt21.135.el9_0, kernel-rt-kvm 5.14.0-70.64.1.rt21.135.el9_0, kernel-rt-core 5.14.0-70.64.1.rt21.135.el9_0, kernel-rt-modules 5.14.0-70.64.1.rt21.135.el9_0, kernel-rt-debug-kvm 5.14.0-70.64.1.rt21.135.el9_0, kernel-rt-debug-core 5.14.0-70.64.1.rt21.135.el9_0, +4 more
    fixed: vendor fix RHSA-2023:4138
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-core 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-modules 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-core 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-modules 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-modules-extra 4.18.0-477.10.1.rt7.274.el8_8, +2 more
    fixed: vendor fix RHSA-2023:2736
  • Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-core 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-modules 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-debug-core 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-modules-core 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-debug-modules 5.14.0-284.11.1.rt14.296.el9_2, +4 more
    fixed: vendor fix RHSA-2023:2148
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-1160.88.1.el7, kernel 3.10.0-1160.88.1.el7, bpftool 3.10.0-1160.88.1.el7, python-perf 3.10.0-1160.88.1.el7, kernel-kdump 3.10.0-1160.88.1.el7, kernel-tools 3.10.0-1160.88.1.el7, +7 more Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-1160.88.1.el7, kernel-debuginfo-common-x86_64 3.10.0-1160.88.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-1160.88.1.el7 Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-1160.88.1.el7, kernel 3.10.0-1160.88.1.el7, bpftool 3.10.0-1160.88.1.el7, python-perf 3.10.0-1160.88.1.el7, kernel-tools 3.10.0-1160.88.1.el7, kernel-tools-libs 3.10.0-1160.88.1.el7, +2 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.88.1.el7
    fixed: vendor fix RHSA-2023:1091
  • Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.57.1.el8_6, kernel-debuginfo-common-x86_64 4.18.0-372.57.1.el8_6
    fixed: vendor fix RHSA-2023:3388

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-25-105-08 updated cvss 4.4

ABB M2M Gateway

  • ABB M2M Gateway >=4.1.2, <=5.0.3, >=5.0.1, <=5.0.3
    affected: mitigation

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

cisa ICSA-23-166-10 updated cvss 5.5

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 5.5

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

Exploit prediction

0.92% chance of exploitation in the next 30 days, higher than 60% 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=2351 referenced PoC, tagged "exploit" by a source, unverified
  • googleprojectzero.blogspot.com https://googleprojectzero.blogspot.com/2022/12/exploiting-CVE-2022-42703-bringing-back-the-stack-attack.html referenced PoC, tagged "exploit" by a source, unverified

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

  • 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.