CVE-2023-52664

Local privilege escalation via atlantic ring double free

Published May 17, 2024 · Updated Aug 5, 2026

Double free in affected Linux kernel branches allows local users to escalate privileges by forcing atlantic ring-allocation failures. The atlantic allocation path treats an array-member ring pointer as a failure flag, so higher-level cleanup can call aq_ring_free again after its data was freed. Reaching the fault requires memory-allocation failure during interface reinitialization; allocator corruption can crash the host or enable kernel-memory control.

CVSS severity7.8
High
EPSS probability0.27%
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 affected Linux kernel branches allows local users to escalate privileges by forcing atlantic ring-allocation failures. The atlantic allocation path treats an array-member ring pointer as a failure flag, so higher-level cleanup can call aq_ring_free again after its data was freed. Reaching the fault requires memory-allocation failure during interface reinitialization; allocator corruption can crash the host or enable kernel-memory control.

The record

CVE
CVE-2023-52664
Published
May 17, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-415, T1499.004, T1068
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. May 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=018423e90bee8978105eaaa265a26e70637f9f1e <0edb3ae8bfa31cd544b0c195bdec00e036002b5d
  2. Affected versionversion=018423e90bee8978105eaaa265a26e70637f9f1e <b3cb7a830a24527877b0bc900b9bd74a96aea928
  3. Affected versionversion=018423e90bee8978105eaaa265a26e70637f9f1e <c11a870a73a3bc4cc7df6dd877a45b181795fcbf
  4. Affected versionversion=018423e90bee8978105eaaa265a26e70637f9f1e <d1fde4a7e1dcc4d49cce285107a7a43c3030878d
  5. Affected versionversion=4.11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=018423e90bee8978105eaaa265a26e70637f9f1e <0edb3ae8bfa31cd544b0c195bdec00e036002b5d; version=018423e90bee8978105eaaa265a26e70637f9f1e <b3cb7a830a24527877b0bc900b9bd74a96aea928; version=018423e90bee8978105eaaa265a26e70637f9f1e <c11a870a73a3bc4cc7df6dd877a45b181795fcbf; version=018423e90bee8978105eaaa265a26e70637f9f1e <d1fde4a7e1dcc4d49cce285107a7a43c3030878d; version=4.11

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-415Double Free
T1499.004Application or System Exploitation
T1068Exploitation for Privilege Escalation

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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