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Fencer Vulns
medium 5.5

CVE-2022-3344 json

A flaw was found in the KVM's AMD nested virtualization (SVM).

published 2022-10-24 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-42731

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits
0
none known

Summary

A flaw was found in the KVM's AMD nested virtualization (SVM). A malicious L1 guest could purposely fail to intercept the shutdown of a cooperative nested guest (L2), possibly leading to a page fault and kernel panic in the host (L0).

Patch / fix

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

debian advisories DEBIAN-CVE-2022-3344

  • 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-2022-3344

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

  • dtb-aarch64 openSUSE Leap 15.4 5.14.21-150400.24.41.1
  • kernel-64kb SLE Module for Basesystem 15 SP4, openSUSE Leap 15.4 5.14.21-150400.24.41.1
  • kernel-syms SLE Module for Development Tools 15 SP4, openSUSE Leap 15.4 5.14.21-150400.24.41.1
  • kernel-obs-qa openSUSE Leap 15.4 5.14.21-150400.24.41.1
  • kernel-source SLE Module for Development Tools 15 SP4, SLE Module for Basesystem 15 SP4, openSUSE Leap 15.4 5.14.21-150400.24.41.1
  • kernel-default SLE Workstation Extension 15 SP4, SLE Module for Legacy 15 SP4, SLE Module for Basesystem 15 SP4 +5 more 5.14.21-150400.24.41.1
  • kernel-kvmsmall openSUSE Leap 15.4 5.14.21-150400.24.41.1
  • kernel-zfcpdump SLE Module for Basesystem 15 SP4, openSUSE Leap 15.4 5.14.21-150400.24.41.1

suse advisories SUSE-SU-2023:0149-1SUSE-SU-2023:0147-1SUSE-SU-2023:0146-1

  • kernel CBL-Mariner 2.0 5.15.82.1-1

azure linux advisories AZL-11352

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-2022-3344 updated cvss 6.5

kernel: KVM: SVM: nested shutdown interception could lead to host crash

  • 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
    affected: workaround, no fix planned “This vulnerability can be mitigated by disabling the nested virtualization feature: ``` # modprobe -r kvm_amd # modprobe kvm_amd nested=0 ```”
  • Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more
    affected: workaround, no fix available “This vulnerability can be mitigated by disabling the nested virtualization feature: ``` # modprobe -r kvm_amd # modprobe kvm_amd nested=0 ```”

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

0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

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

Affected products

  • n/a Linux kernel

Classification

Weakness
  • CWE-440 Expected Behavior Violation
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.