CVE-2026-23164

Service interruption via unreleased rocker port allocations

Published Feb 14, 2026 · Updated Feb 14, 2026

A memory leak in the Linux kernel rocker driver allows local users to exhaust memory by repeatedly removing affected rocker devices. rocker_world_port_post_fini returns when port_post_fini is unset and therefore skips freeing the wpriv allocation created by rocker_world_port_pre_init. Repeated device removal on a system using rocker_ofdpa_ops is required, and each cycle leaks sizeof(struct ofdpa_port) bytes until memory pressure interrupts service.

CVSS severity5.5
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A memory leak in the Linux kernel rocker driver allows local users to exhaust memory by repeatedly removing affected rocker devices. rocker_world_port_post_fini returns when port_post_fini is unset and therefore skips freeing the wpriv allocation created by rocker_world_port_pre_init. Repeated device removal on a system using rocker_ofdpa_ops is required, and each cycle leaks sizeof(struct ofdpa_port) bytes until memory pressure interrupts service.

The record

CVE
CVE-2026-23164
Published
Feb 14, 2026
Updated
Feb 14, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 14, 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=4.6
  2. Affected versionversion=e420114eef4a3a5025a243b89b0dc343101e3d3c <2a3a64d75d2d0727da285749476761ebcad557a3
  3. Affected versionversion=e420114eef4a3a5025a243b89b0dc343101e3d3c <8ce2e85889939c02740b4245301aa5c35fc94887
  4. Affected versionversion=e420114eef4a3a5025a243b89b0dc343101e3d3c <8d7ba71e46216b8657a82ca2ec118bc93812a4d0
  5. Affected versionversion=e420114eef4a3a5025a243b89b0dc343101e3d3c <b11e6f926480ab0939fec44781f28558c54be4e7
  6. Affected versionversion=e420114eef4a3a5025a243b89b0dc343101e3d3c <d448bf96889f1905e740c554780f5c9fa0440566
  7. Affected versionversion=e420114eef4a3a5025a243b89b0dc343101e3d3c <d8723917efda3b4f4c3de78d1ec1e1af015c0be1
  8. Affected versionversion=e420114eef4a3a5025a243b89b0dc343101e3d3c <dce375f4afc348c310d171abcde7ec1499a4c26a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.6; version=e420114eef4a3a5025a243b89b0dc343101e3d3c <2a3a64d75d2d0727da285749476761ebcad557a3; version=e420114eef4a3a5025a243b89b0dc343101e3d3c <8ce2e85889939c02740b4245301aa5c35fc94887; version=e420114eef4a3a5025a243b89b0dc343101e3d3c <8d7ba71e46216b8657a82ca2ec118bc93812a4d0; version=e420114eef4a3a5025a243b89b0dc343101e3d3c <b11e6f926480ab0939fec44781f28558c54be4e7; version=e420114eef4a3a5025a243b89b0dc343101e3d3c <d448bf96889f1905e740c554780f5c9fa0440566; version=e420114eef4a3a5025a243b89b0dc343101e3d3c <d8723917efda3b4f4c3de78d1ec1e1af015c0be1; version=e420114eef4a3a5025a243b89b0dc343101e3d3c <dce375f4afc348c310d171abcde7ec1499a4c26a

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
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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