CVE-2025-4574Network attack vector

Memory corruption via unsynchronized channel cleanup

Published May 13, 2025 · Updated Jun 30, 2026

Double free in Crossbeam Project crossbeam-channel 0.5.12 through 0.5.14 allows attackers to corrupt memory when a channel is dropped. Channel::discard_all_messages can free a non-null head.block without atomically replacing it with null, so Channel::drop frees the pointer again. Triggering requires a difficult concurrency race during channel cleanup; the resulting double free corrupts memory in the consuming process and can interrupt it.

CVSS severity6.3
Medium
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double free in Crossbeam Project crossbeam-channel 0.5.12 through 0.5.14 allows attackers to corrupt memory when a channel is dropped. Channel::discard_all_messages can free a non-null head.block without atomically replacing it with null, so Channel::drop frees the pointer again. Triggering requires a difficult concurrency race during channel cleanup; the resulting double free corrupts memory in the consuming process and can interrupt it.

The record

CVE
CVE-2025-4574
Published
May 13, 2025
Updated
Jun 30, 2026
Vendor
389 Directory Server
Product
Red Hat OpenShift AI
Classifications
CWE-415, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 30, 2026Record 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 privilegesunauthenticated

What is affected?

389 Directory Server · Red Hat OpenShift AIAffected versions are unavailable in this record.
Crossbeam Project · crossbeam-channelversion=0.5.12 <0.5.15
389 Directory Server · Red Hat Enterprise Linux 10Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 7Affected versions are unavailable in this record.
389 Directory Server · Red Hat SatelliteAffected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
389 Directory Server · Red Hat Trusted Profile AnalyzerAffected versions are unavailable in this record.
389 Directory Server · Red Hat OpenShift Container Platform 4Affected versions are unavailable in this record.
389 Directory Server · Red Hat Trusted Artifact SignerAffected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.

Published CVSS scores

6.3GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-415Double Free
T1499.004Endpoint Denial of Service: Application 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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