CVE-2024-36952

Persistent fabric sessions via premature vport teardown

Published May 30, 2024 · Updated May 11, 2026

Incomplete cleanup in the Linux kernel lpfc driver allows local users to leave deleted NPIV ports logged into a Fibre Channel fabric. During vport deletion, fc_remove_host() releases the last ndlp reference before DA_ID and LOGO messages are sent, so fabric cleanup can be skipped. Exploitation requires local access and an lpfc-backed NPIV configuration; the stale fabric login can interrupt Fibre Channel availability.

CVSS severity4.7
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incomplete cleanup in the Linux kernel lpfc driver allows local users to leave deleted NPIV ports logged into a Fibre Channel fabric. During vport deletion, fc_remove_host() releases the last ndlp reference before DA_ID and LOGO messages are sent, so fabric cleanup can be skipped. Exploitation requires local access and an lpfc-backed NPIV configuration; the stale fabric login can interrupt Fibre Channel availability.

The record

CVE
CVE-2024-36952
Published
May 30, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-459
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 30, 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=2.6.23
  2. Affected versionversion=92d7f7b0cde3ad2260e7462b40867b57efd49851 <0936809d968ecf81e0726fbd02ff2a5732d960c3
  3. Affected versionversion=92d7f7b0cde3ad2260e7462b40867b57efd49851 <4ddf01f2f1504fa08b766e8cfeec558e9f8eef6c
  4. Affected versionversion=92d7f7b0cde3ad2260e7462b40867b57efd49851 <718602cd15f4c5710850090ea3066a89eeb46278
  5. Affected versionversion=92d7f7b0cde3ad2260e7462b40867b57efd49851 <76337eb8daee32bcc67742efab3168ed4ca299d0
  6. Affected versionversion=92d7f7b0cde3ad2260e7462b40867b57efd49851 <f2c7f029051edc4b394bb48edbe2297575abefe0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.23; version=92d7f7b0cde3ad2260e7462b40867b57efd49851 <0936809d968ecf81e0726fbd02ff2a5732d960c3; version=92d7f7b0cde3ad2260e7462b40867b57efd49851 <4ddf01f2f1504fa08b766e8cfeec558e9f8eef6c; version=92d7f7b0cde3ad2260e7462b40867b57efd49851 <718602cd15f4c5710850090ea3066a89eeb46278; version=92d7f7b0cde3ad2260e7462b40867b57efd49851 <76337eb8daee32bcc67742efab3168ed4ca299d0; version=92d7f7b0cde3ad2260e7462b40867b57efd49851 <f2c7f029051edc4b394bb48edbe2297575abefe0

Published CVSS scores

4.7NIST NVDCVSS:3.1/AV:L/AC:H/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.

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-459Incomplete Cleanup

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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