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NVD / CVE Program· CNA redhat

CVE-2022-26353: A flaw was found in the virtio-net device of QEMU.

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 2.7% (FIRST EPSS); higher than 86.1% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: hivex (AlmaLinux:8) 1.3.18-23.module_el8.6.0+2880+7d9e3703; hivex-devel (AlmaLinux:8) 1.3.18-23.module_el8.6.0+2880+7d9e3703; libguestfs (AlmaLinux:8) 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to hivex (AlmaLinux:8) 1.3.18-23.module_el8.6.0+2880+7d9e3703; hivex-devel (AlmaLinux:8) 1.3.18-23.module_el8.6.0+2880+7d9e3703; libguestfs (AlmaLinux:8) 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A flaw was found in the virtio-net device of QEMU. This flaw was inadvertently introduced with the fix for CVE-2021-3748, which forgot to unmap the cached virtqueue elements on error, leading to memory leakage and other unexpected results. Affected QEMU version: 6.2.0.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Mar 16, 2022
Updated
Jun 17, 2026
EPSS
2.7% · 86th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.7%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-26353

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
qemuqemu
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux11.0
  • qemu qemu6.2.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a qemu-kvm

    • Affected QEMU version: 6.2.0affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8hivexbefore 1.3.18-23.module_el8.6.0+2880+7d9e37031.3.18-23.module_el8.6.0+2880+7d9e3703
AlmaLinux:8hivex-develbefore 1.3.18-23.module_el8.6.0+2880+7d9e37031.3.18-23.module_el8.6.0+2880+7d9e3703
AlmaLinux:8libguestfsbefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-appliancebefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-bash-completionbefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-develbefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-gfs2before 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-gobjectbefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-gobject-develbefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-inspect-iconsbefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-javabefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-java-develbefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-javadocbefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-man-pages-jabefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-man-pages-ukbefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-rescuebefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-rsyncbefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-toolsbefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-tools-cbefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libguestfs-winsupportbefore 8.6-1.module_el8.6.0+2880+7d9e37038.6-1.module_el8.6.0+2880+7d9e3703
AlmaLinux:8libguestfs-xfsbefore 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma
AlmaLinux:8libiscsibefore 1.18.0-8.module_el8.6.0+2880+7d9e37031.18.0-8.module_el8.6.0+2880+7d9e3703
AlmaLinux:8libiscsi-develbefore 1.18.0-8.module_el8.6.0+2880+7d9e37031.18.0-8.module_el8.6.0+2880+7d9e3703
AlmaLinux:8libiscsi-utilsbefore 1.18.0-8.module_el8.6.0+2880+7d9e37031.18.0-8.module_el8.6.0+2880+7d9e3703

+96

Same product

qemu: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-12928The QMP migrate command in QEMU version 4.0.0 and earlier is vulnerable to OS command injection, which allows the remote attacker to achieve
    60This week
  • CVE-2015-8556Local privilege escalation vulnerability in the Gentoo QEMU package before 2.5.0-r1.
    44Plan
  • CVE-2017-15118A stack-based buffer overflow vulnerability was found in NBD server implementation in qemu before 2.11 allowing a client to request an expor
    43Plan

Published before and after this one in the same product

  • ← EarlierCVE-2021-3638Mar 3, 2022 · An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU.
    26Monitor
  • ← EarlierCVE-2021-20257Mar 16, 2022 · An infinite loop flaw was found in the e1000 NIC emulator of the QEMU.
    26Monitor
  • Later →CVE-2022-26354Mar 16, 2022 · A flaw was found in the vhost-vsock device of QEMU.
    12Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:qemu-guest-agent17:6.2.0-11.el9_0.3 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-img17:6.2.0-11.el9_0.3 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm17:6.2.0-11.el9_0.3 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-audio-pa17:6.2.0-11.el9_0.3 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-block-curl17:6.2.0-11.el9_0.3 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-block-rbd17:6.2.0-11.el9_0.3 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-common17:6.2.0-11.el9_0.3 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-core17:6.2.0-11.el9_0.3 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-device-display-virtio-gpu17:6.2.0-11.el9_0.3 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-device-display-virtio-gpu-ccw17:6.2.0-11.el9_0.3 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-device-display-virtio-gpu-gl17:6.2.0-11.el9_0.3 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-device-display-virtio-gpu-pci17:6.2.0-11.el9_0.3 · AlmaLinux:9Package registry (OSV)
debian:qemu1:7.0+dfsg-1 · Debian:12Package registry (OSV)
opensuse:qemu6.2.0-150400.37.5.3 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:qemu-linux-user6.2.0-150400.37.5.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:qemu-testsuite6.2.0-150400.37.5.5 · openSUSE:Leap 15.4Package registry (OSV)
red hat:hivex0:1.3.18-21.module+el8.4.0+11609+2eba841a · Red Hat:advanced_virtualization:8.4::el8Package registry (OSV)
red hat:hivex-debuginfo0:1.3.18-21.module+el8.4.0+11609+2eba841a · Red Hat:advanced_virtualization:8.4::el8Package registry (OSV)
red hat:hivex-debugsource0:1.3.18-21.module+el8.4.0+11609+2eba841a · Red Hat:advanced_virtualization:8.4::el8Package registry (OSV)
red hat:hivex-devel0:1.3.18-21.module+el8.4.0+11609+2eba841a · Red Hat:advanced_virtualization:8.4::el8Package registry (OSV)
red hat:libguestfs1:1.44.0-2.module+el8.4.0+10146+75917d2f · Red Hat:advanced_virtualization:8.4::el8Package registry (OSV)
red hat:libguestfs-bash-completion1:1.44.0-2.module+el8.4.0+10146+75917d2f · Red Hat:advanced_virtualization:8.4::el8Package registry (OSV)
red hat:libguestfs-debuginfo1:1.44.0-2.module+el8.4.0+10146+75917d2f · Red Hat:advanced_virtualization:8.4::el8Package registry (OSV)
red hat:libguestfs-debugsource1:1.44.0-2.module+el8.4.0+10146+75917d2f · Red Hat:advanced_virtualization:8.4::el8Package registry (OSV)
red hat:libguestfs-devel1:1.44.0-2.module+el8.4.0+10146+75917d2f · Red Hat:advanced_virtualization:8.4::el8Package registry (OSV)
red hat:libguestfs-gfs21:1.44.0-2.module+el8.4.0+10146+75917d2f · Red Hat:advanced_virtualization:8.4::el8Package registry (OSV)
red hat:libguestfs-gobject1:1.44.0-2.module+el8.4.0+10146+75917d2f · Red Hat:advanced_virtualization:8.4::el8Package registry (OSV)
red hat:SLOF0:20200717-1.gite18ddad8.module+el8.4.0+8855+a9e237a9 · Red Hat:advanced_virtualization:8.4::el8Package registry (OSV)
rocky linux:hivex0:1.3.18-23.module+el8.7.0+1084+97b81f61 · Rocky Linux:8Package registry (OSV)
rocky linux:libguestfs1:1.44.0-5.module+el8.6.0+1052+ff61d164.rocky · Rocky Linux:8Package registry (OSV)

+11

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-772 · Missing Release of Resource after Effective Lifetime

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records