CVE-2023-1544

Guest-triggered crash via oversized PVRDMA ring

Published Mar 23, 2023 · Updated Nov 3, 2025

Out-of-bounds read in QEMU before 8.2.0-rc0 allows guest OS users to crash the emulator through a crafted PVRDMA ring. The init_dev_ring function fails to reject a guest-controlled page count exceeding the capacity of the single page table used for a ring. The guest must control a driver in a VM configured with the VMware PVRDMA device; exploitation terminates the hosting QEMU process and interrupts that VM.

CVSS severity6.0
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in QEMU before 8.2.0-rc0 allows guest OS users to crash the emulator through a crafted PVRDMA ring. The init_dev_ring function fails to reject a guest-controlled page count exceeding the capacity of the single page table used for a ring. The guest must control a driver in a VM configured with the VMware PVRDMA device; exploitation terminates the hosting QEMU process and interrupts that VM.

The record

CVE
CVE-2023-1544
Published
Mar 23, 2023
Updated
Nov 3, 2025
Vendor
QEMU Project
Product
QEMU
Classifications
CWE-125, T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Mar 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record 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 privilegesUnavailable in this record.

What is affected?

QEMU Project · QEMUAffected versions are unavailable in this record.

Published CVSS scores

6.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H
6.0Fedora ProjectCVSS:3.1/AV:L/AC:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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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