Skip to content
Fencer Vulns
medium 5.5

CVE-2022-45869 json

A race condition in the x86 KVM subsystem in the Linux kernel through 6.1-rc6 allows guest OS users to cause a denial of service (host OS c…

published 2022-11-30 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-48721

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits
0
none known

Summary

A race condition in the x86 KVM subsystem in the Linux kernel through 6.1-rc6 allows guest OS users to cause a denial of service (host OS crash or host OS memory corruption) when nested virtualisation and the TDP MMU are enabled.

Patch / fix

  • linux linux_kernel 6.1
  • linux Debian 14, Debian 13, Debian 12 6.0.12-1

debian advisories DEBIAN-CVE-2022-45869

  • linux Ubuntu 22.04 LTS 5.15.0-67.74
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1031.35
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1030.37
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1028.33
  • linux-ibm Ubuntu 22.04 LTS 5.15.0-1026.29
  • linux-kvm Ubuntu 22.04 LTS 5.15.0-1029.34
  • linux-azure Ubuntu 22.04 LTS 5.15.0-1034.41
  • linux-gkeop Ubuntu 22.04 LTS 5.15.0-1016.21

ubuntu advisories UBUNTU-CVE-2022-45869

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

  • perf rhev hypervisor 4.4, RHEL 8.6 EUS 4.18.0-372.95.1.el8_6
  • kernel RHEL 8 4.18.0-513.5.1.el8_9
  • perf RHEL 8 4.18.0-513.5.1.el8_9
  • bpftool RHEL 8 4.18.0-513.5.1.el8_9
  • kernel-core RHEL 8 4.18.0-513.5.1.el8_9
  • kernel-tools RHEL 8 4.18.0-513.5.1.el8_9
  • python3-perf RHEL 8 4.18.0-513.5.1.el8_9
  • kernel-modules RHEL 8 4.18.0-513.5.1.el8_9

red hat advisories RHSA-2024:1404RHSA-2024:1188RHSA-2023:7077RHSA-2023:6901RHSA-2023:4377RHSA-2023:4378

  • 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
  • dtb-aarch64 openSUSE Leap 15.4 5.14.21-150400.24.38.1
  • kernel-64kb SLE Module for Basesystem 15 SP4, openSUSE Leap 15.4 5.14.21-150400.24.38.1
  • kernel-syms SLE Module for Development Tools 15 SP4, openSUSE Leap 15.4 5.14.21-150400.24.38.1
  • kernel-obs-qa openSUSE Leap 15.4 5.14.21-150400.24.38.1

suse advisories SUSE-SU-2022:4617-1SUSE-SU-2022:4585-1SUSE-SU-2022:4504-1

  • kernel AlmaLinux 8 4.18.0-513.5.1.el8_9
  • perf AlmaLinux 8 4.18.0-513.5.1.el8_9
  • bpftool AlmaLinux 8 4.18.0-513.5.1.el8_9
  • kernel-core AlmaLinux 8 4.18.0-513.5.1.el8_9
  • kernel-tools AlmaLinux 8 4.18.0-513.5.1.el8_9
  • python3-perf AlmaLinux 8 4.18.0-513.5.1.el8_9
  • kernel-modules AlmaLinux 8 4.18.0-513.5.1.el8_9
  • kernel-zfcpdump AlmaLinux 8 4.18.0-513.5.1.el8_9

almalinux advisories ALSA-2023:7077ALSA-2023:4377ALSA-2023:4378

  • kernel-rt Rocky Linux 9 5.14.0-284.25.1.rt14.310.el9_2

rocky linux advisories RLSA-2023:4378

  • kernel CBL-Mariner 2.0 5.15.82.1-1

azure linux advisories AZL-11574

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

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-2022-45869 updated cvss 5.5

kernel: KVM: x86/mmu: race condition in direct_page_fault()

  • Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-513.5.1.el8_9, kernel-debuginfo-common-aarch64 4.18.0-513.5.1.el8_9, kernel-debuginfo-common-ppc64le 4.18.0-513.5.1.el8_9
    fixed: vendor fix RHSA-2023:7077
  • Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-debuginfo-common-x86_64 4.18.0-372.95.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.95.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.95.1.el8_6
    fixed: vendor fix RHSA-2024:1188
  • Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-debuginfo-common-x86_64 4.18.0-477.51.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.51.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.51.1.el8_8
    fixed: vendor fix RHSA-2024:1404
  • Red Hat Enterprise Linux AppStream (v. 9) perf 5.14.0-284.25.1.el9_2, rtla 5.14.0-284.25.1.el9_2, kernel-devel-matched 5.14.0-284.25.1.el9_2, kernel-64k-devel-matched 5.14.0-284.25.1.el9_2, kernel-debug-devel-matched 5.14.0-284.25.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.25.1.el9_2, +5 more
    fixed: vendor fix RHSA-2023:4377
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-513.5.1.el8_9, kernel 4.18.0-513.5.1.el8_9, bpftool 4.18.0-513.5.1.el8_9, kernel-core 4.18.0-513.5.1.el8_9, kernel-tools 4.18.0-513.5.1.el8_9, python3-perf 4.18.0-513.5.1.el8_9, +15 more
    fixed: vendor fix RHSA-2023:7077
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.0.0-284.25.1.el9_2, kernel 5.14.0-284.25.1.el9_2, kernel-64k 5.14.0-284.25.1.el9_2, kernel-core 5.14.0-284.25.1.el9_2, kernel-tools 5.14.0-284.25.1.el9_2, python3-perf 5.14.0-284.25.1.el9_2, +28 more
    fixed: vendor fix RHSA-2023:4377
  • Red Hat Enterprise Linux BaseOS EUS (v.8.6) perf 4.18.0-372.95.1.el8_6, kernel 4.18.0-372.95.1.el8_6, bpftool 4.18.0-372.95.1.el8_6, kernel-core 4.18.0-372.95.1.el8_6, kernel-tools 4.18.0-372.95.1.el8_6, python3-perf 4.18.0-372.95.1.el8_6, +15 more
    fixed: vendor fix RHSA-2024:1188
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8) perf 4.18.0-477.51.1.el8_8, kernel 4.18.0-477.51.1.el8_8, bpftool 4.18.0-477.51.1.el8_8, kernel-core 4.18.0-477.51.1.el8_8, kernel-tools 4.18.0-477.51.1.el8_8, python3-perf 4.18.0-477.51.1.el8_8, +15 more
    fixed: vendor fix RHSA-2024:1404
show 6 more
  • Red Hat Enterprise Linux CRB (v. 9) kernel-debuginfo-common-s390x 5.14.0-284.25.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.25.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.25.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.25.1.el9_2
    fixed: vendor fix RHSA-2023:4377
  • Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-284.25.1.rt14.310.el9_2, kernel-rt-kvm 5.14.0-284.25.1.rt14.310.el9_2, kernel-rt-core 5.14.0-284.25.1.rt14.310.el9_2, kernel-rt-modules 5.14.0-284.25.1.rt14.310.el9_2, kernel-rt-debug-kvm 5.14.0-284.25.1.rt14.310.el9_2, kernel-rt-debug-core 5.14.0-284.25.1.rt14.310.el9_2, +6 more
    fixed: vendor fix RHSA-2023:4378
  • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt 4.18.0-513.5.1.rt7.307.el8_9, kernel-rt-core 4.18.0-513.5.1.rt7.307.el8_9, kernel-rt-modules 4.18.0-513.5.1.rt7.307.el8_9, kernel-rt-debug-core 4.18.0-513.5.1.rt7.307.el8_9, kernel-rt-debug-modules 4.18.0-513.5.1.rt7.307.el8_9, kernel-rt-modules-extra 4.18.0-513.5.1.rt7.307.el8_9, +2 more Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-513.5.1.rt7.307.el8_9, kernel-rt-kvm 4.18.0-513.5.1.rt7.307.el8_9, kernel-rt-core 4.18.0-513.5.1.rt7.307.el8_9, kernel-rt-modules 4.18.0-513.5.1.rt7.307.el8_9, kernel-rt-debug-kvm 4.18.0-513.5.1.rt7.307.el8_9, kernel-rt-debug-core 4.18.0-513.5.1.rt7.307.el8_9, +4 more
    fixed: vendor fix RHSA-2023:6901
  • Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-284.25.1.rt14.310.el9_2, kernel-rt-core 5.14.0-284.25.1.rt14.310.el9_2, kernel-rt-modules 5.14.0-284.25.1.rt14.310.el9_2, kernel-rt-debug-core 5.14.0-284.25.1.rt14.310.el9_2, kernel-rt-modules-core 5.14.0-284.25.1.rt14.310.el9_2, kernel-rt-debug-modules 5.14.0-284.25.1.rt14.310.el9_2, +4 more
    fixed: vendor fix RHSA-2023:4378
  • Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.95.1.el8_6, kernel-debuginfo-common-x86_64 4.18.0-372.95.1.el8_6
    fixed: vendor fix RHSA-2024:1188
  • 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 AppStream (v. 9) kernel-doc 5.14.0-284.25.1.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 SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • git.kernel.org https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=47b0c2e4c220f2251fd8dcfbb44479819c715e15 referenced PoC, tagged "exploit" by a source, unverified

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:N/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Classification

Weakness
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
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.