CVE-2023-52702

Service interruption via failed meter replacement leak

Published May 21, 2024 · Updated May 11, 2026

Memory leak in the Open vSwitch meter handler in Linux allows local users to exhaust kernel memory through repeated meter updates. ovs_meter_cmd_set() detaches old_meter but does not free it when attachment of a replacement meter fails, leaking one allocation per failed update. The path requires local access with permission to issue Open vSwitch meter commands; sustained failures exhaust memory and interrupt service.

CVSS severity5.5
Medium
EPSS probability0.25%
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 the Open vSwitch meter handler in Linux allows local users to exhaust kernel memory through repeated meter updates. ovs_meter_cmd_set() detaches old_meter but does not free it when attachment of a replacement meter fails, leaking one allocation per failed update. The path requires local access with permission to issue Open vSwitch meter commands; sustained failures exhaust memory and interrupt service.

The record

CVE
CVE-2023-52702
Published
May 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 21, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.8
  2. Affected versionversion=c7c4c44c9a95d87e50ced38f7480e779cb472174 <1563e998a938f095548054ef09e277b562b79536
  3. Affected versionversion=c7c4c44c9a95d87e50ced38f7480e779cb472174 <2fa28f5c6fcbfc794340684f36d2581b4f2d20b5
  4. Affected versionversion=c7c4c44c9a95d87e50ced38f7480e779cb472174 <c0f65ee0a3329eb4b94beaef0268633696e2d0c6
  5. Affected versionversion=c7c4c44c9a95d87e50ced38f7480e779cb472174 <e336a9e08618203a456fb5367f1387b14554f55e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.8; version=c7c4c44c9a95d87e50ced38f7480e779cb472174 <1563e998a938f095548054ef09e277b562b79536; version=c7c4c44c9a95d87e50ced38f7480e779cb472174 <2fa28f5c6fcbfc794340684f36d2581b4f2d20b5; version=c7c4c44c9a95d87e50ced38f7480e779cb472174 <c0f65ee0a3329eb4b94beaef0268633696e2d0c6; version=c7c4c44c9a95d87e50ced38f7480e779cb472174 <e336a9e08618203a456fb5367f1387b14554f55e

Published CVSS scores

5.5NIST NVDCVSS: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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
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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