CVE-2023-0330Public exploit

Host process crash via recursive DMA MMIO

Published Mar 6, 2023 · Updated Aug 2, 2024

Stack overflow in QEMU's lsi53c895a SCSI controller before 8.1.0-rc0 allows guest OS users to crash the host QEMU process. A guest-controlled SCSI script can direct DMA at the controller's own MMIO region, recursively reentering lsi_execute_script until the host stack is exhausted. The guest must have high privileges and access to an emulated LSI controller; the documented consequence is a host-process crash.

CVSS severity5.3
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in QEMU's lsi53c895a SCSI controller before 8.1.0-rc0 allows guest OS users to crash the host QEMU process. A guest-controlled SCSI script can direct DMA at the controller's own MMIO region, recursively reentering lsi_execute_script until the host stack is exhausted. The guest must have high privileges and access to an emulated LSI controller; the documented consequence is a host-process crash.

The record

CVE
CVE-2023-0330
Published
Mar 6, 2023
Updated
Aug 2, 2024
Vendor
QEMU Project
Product
QEMU
Classifications
CWE-121, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Mar 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

QEMU Project · QEMUAffected versions are unavailable in this record.

Published CVSS scores

5.3SUSECVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H
6.0NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
5.3Fedora ProjectCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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