CVE-2023-3750Network attack vector

Daemon crash via prematurely released storage-pool lock

Published Jul 24, 2023 · Updated Nov 8, 2025

Improper locking in libvirt on Red Hat Enterprise Linux 9 allows remote authenticated users to crash the libvirt daemon via read-only connections. virStoragePoolObjListSearch returns a referenced storage-pool object after VIR_LOCK_GUARD automatically releases its lock, allowing another thread to race the caller's next lock attempt. A client needs read-only API access; exploitation interrupts virtualization management by terminating the daemon, without reported data disclosure or modification.

CVSS severity6.5
Medium
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in libvirt on Red Hat Enterprise Linux 9 allows remote authenticated users to crash the libvirt daemon via read-only connections. virStoragePoolObjListSearch returns a referenced storage-pool object after VIR_LOCK_GUARD automatically releases its lock, allowing another thread to race the caller's next lock attempt. A client needs read-only API access; exploitation interrupts virtualization management by terminating the daemon, without reported data disclosure or modification.

The record

CVE
CVE-2023-3750
Published
Jul 24, 2023
Updated
Nov 8, 2025
Vendor
Red Hat
Product
Red Hat Enterprise Linux 9
Classifications
CWE-667, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 8, 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 vectornetwork
Required privilegesauthenticated

What is affected?

Red Hat · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.

Published CVSS scores

5.3NVDCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5Red HatCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking
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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