CVE-2022-4172 — An integer overflow and buffer overflow issues were found in the ACPI Error Reco
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 devic
Published
2022-11-29T00:00:00.000Z
Last modified
2025-04-14T18:10:14.679Z
01What is this vulnerability?
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.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / QEMU (ACPI ERST) | Affected: 7.0.0, Fixed: 7.2.0-rc0 |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2022-11-29T00:00:00.000Z
- Last modified: 2025-04-14T18:10:14.679Z
09References
- lore.kernel.org — https://lore.kernel.org/qemu-devel/20221024154233.1043347-1-lk%40c--e.de/
- gitlab.com — https://gitlab.com/qemu-project/qemu/-/issues/1268
- gitlab.com — https://gitlab.com/qemu-project/qemu/-/commit/defb7098
- lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
- security.netapp.com — https://security.netapp.com/advisory/ntap-20230127-0013/
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