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CVE-2022-4172

17
FAUCET Score

CVE-2022-4172 is a medium-severity vulnerability affecting QEMU, specifically within its ACPI Error Record Serialization Table (ERST) device. It involves integer and buffer overflow issues in the read_erst_record() and write_erst_record() functions, potentially allowing a malicious guest to overrun host buffers and crash the QEMU process. With a CVSS score of 6.5, this local attack requires low privileges and has high impact on availability, but no impact on confidentiality or integrity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
7.0.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:7.0.0:-:*:*:*:*:*:*
37CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.0
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 86th percentile among its peer group of 15,940 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: qemu-kvm-17:7.2.0-14.el9_2
View patch

Vendor Advisories (1)

redhatCVE-2022-4172Moderate

QEMU: ACPI ERST: memory corruption issues in read_erst_record and write_erst_record

Oct 19, 2022

References

gitlab.com / qemu-project/qemu/-/commit/defb7098
PatchThird Party Advisory
gitlab.com / qemu-project/qemu/-/issues/1268
ExploitIssue TrackingThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O
lore.kernel.org / qemu-devel/20221024154233.1043347-1-lk%40c--e.de
security.netapp.com / advisory/ntap-20230127-0013
Third Party Advisory