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CVE-2022-4172· NVD / CVE Program· CNA redhat

An integer overflow and buffer overflow issues were found in the ACPI Error Record Serialization Table (ERST) device of QEMU in the read_ers

Noroxi assessment

Priority: Monitor (action score 26/100)

  • 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: 0.39% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: qemu-guest-agent (AlmaLinux:9) 17:7.2.0-14.el9_2; qemu-img (AlmaLinux:9) 17:7.2.0-14.el9_2; qemu-kvm (AlmaLinux:9) 17:7.2.0-14.el9_2.

Low priority for now. Upgrade to qemu-guest-agent (AlmaLinux:9) 17:7.2.0-14.el9_2; qemu-img (AlmaLinux:9) 17:7.2.0-14.el9_2; qemu-kvm (AlmaLinux:9) 17:7.2.0-14.el9_2 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

An integer overflow and buffer overflow issues were found in the ACPI Error Record Serialization Table (ERST) device of QEMU in the read_erst_record() and write_erst_record() functions. Both issues may allow the guest to overrun the host buffer allocated for the ERST memory device. A malicious guest could use these flaws to crash the QEMU process on the host.

MediumCVSS 6.5 · v3.1—No exploit Fix available
Published
Nov 29, 2022
Updated
Jun 17, 2026
EPSS
0.3% · 31th percentile

Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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-2022-4172

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
fedoraprojectfedora

Affected versions

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

  • fedoraproject fedora37
  • qemu qemu7.0.0

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 (ACPI ERST)

    • Affected: 7.0.0, Fixed: 7.2.0-rc0affected

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:9qemu-guest-agentbefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-imgbefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-kvmbefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-kvm-audio-pabefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-kvm-block-curlbefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-kvm-block-rbdbefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-kvm-commonbefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-kvm-corebefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-kvm-device-display-virtio-gpubefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-kvm-device-display-virtio-gpu-ccwbefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-kvm-device-display-virtio-gpu-pcibefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-kvm-device-display-virtio-vgabefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-kvm-device-usb-hostbefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-kvm-device-usb-redirectbefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-kvm-docsbefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-kvm-toolsbefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-kvm-ui-egl-headlessbefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-kvm-ui-openglbefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
AlmaLinux:9qemu-pr-helperbefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
Debian:12qemubefore 1:7.2+dfsg-11:7.2+dfsg-1
openSUSE:Tumbleweedqemubefore 7.1.0-10.17.1.0-10.1
Red Hat:enterprise_linux:9::appstreamqemu-guest-agentbefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
Red Hat:enterprise_linux:9::appstreamqemu-guest-agent-debuginfobefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2
Red Hat:enterprise_linux:9::appstreamqemu-imgbefore 17:7.2.0-14.el9_217:7.2.0-14.el9_2

+36

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
    46Plan
  • 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
  • CVE-2022-36648The hardware emulation in the of_dpa_cmd_add_l2_flood of rocker device model in QEMU, as used in 7.0.0 and earlier, allows remote attackers
    41Plan
  • CVE-2017-16845hw/input/ps2.c in Qemu does not validate 'rptr' and 'count' values during guest migration, leading to out-of-bounds access.
    41Plan
  • CVE-2016-7161Heap-based buffer overflow in the .receive callback of xlnx.xps-ethernetlite in QEMU (aka Quick Emulator) allows attackers to execute arbitr
    41Plan

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-agent17:7.2.0-14.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-img17:7.2.0-14.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm17:7.2.0-14.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-audio-pa17:7.2.0-14.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-block-curl17:7.2.0-14.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-block-rbd17:7.2.0-14.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-common17:7.2.0-14.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-core17:7.2.0-14.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-device-display-virtio-gpu17:7.2.0-14.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-device-display-virtio-gpu-ccw17:7.2.0-14.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-device-display-virtio-gpu-pci17:7.2.0-14.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:qemu-kvm-device-display-virtio-vga17:7.2.0-14.el9_2 · AlmaLinux:9Package registry (OSV)
debian:qemu1:7.2+dfsg-1 · Debian:12Package registry (OSV)
opensuse:qemu7.1.0-10.1 · openSUSE:TumbleweedPackage registry (OSV)
red hat:qemu-guest-agent17:7.2.0-14.el9_2 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:qemu-guest-agent-debuginfo17:7.2.0-14.el9_2 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:qemu-img17:7.2.0-14.el9_2 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:qemu-img-debuginfo17:7.2.0-14.el9_2 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:qemu-kvm17:7.2.0-14.el9_2 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:qemu-kvm-audio-pa17:7.2.0-14.el9_2 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:qemu-kvm-audio-pa-debuginfo17:7.2.0-14.el9_2 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:qemu-kvm-block-curl17:7.2.0-14.el9_2 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:qemu-kvm-block-curl-debuginfo17:7.2.0-14.el9_2 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:qemu-kvm-block-rbd17:7.2.0-14.el9_2 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:qemu-kvm-block-rbd-debuginfo17:7.2.0-14.el9_2 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:qemu-kvm-common17:7.2.0-14.el9_2 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)

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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

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

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).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • 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

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality impact
None
Integrity impact
None
Availability impact
High

CVSS vector

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

nvd-primary

Root cause

When data is copied, the source length is not compared with the size of the destination buffer. Excess data overwrites adjacent memory.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

c
char buf[256];memcpy(buf, pkt->data, pkt->len);

Fixed

c
char buf[256];if (pkt->len > sizeof(buf)) {  return -EINVAL;}memcpy(buf, pkt->data, pkt->len);

Change log

  1. Fix✗ → ✓

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

References

All records