CVE-2024-22563Public exploitNetwork attack vector

Service interruption via failed pcap file open

Published Jan 19, 2024 · Updated Jun 2, 2025

Memory leak in Open vSwitch 2.17.8 allows remote attackers to interrupt service by triggering a failed packet-capture file open. ovs_pcap_open allocates its p_file structure before calling fopen but, on an fopen failure, returns without releasing that allocation. Public evidence demonstrates the leak only through a local test harness, leaving the production request path and repetition rate needed for service interruption undisclosed.

CVSS severity7.5
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in Open vSwitch 2.17.8 allows remote attackers to interrupt service by triggering a failed packet-capture file open. ovs_pcap_open allocates its p_file structure before calling fopen but, on an fopen failure, returns without releasing that allocation. Public evidence demonstrates the leak only through a local test harness, leaving the production request path and repetition rate needed for service interruption undisclosed.

The record

CVE
CVE-2024-22563
Published
Jan 19, 2024
Updated
Jun 2, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-401, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 2, 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 buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5SUSECVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
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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