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CVE Record

CVE-2024-36952: scsi: lpfc: Move NPIV's transport unregistration to after resource clean up

In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Move NPIV's transport unregistration to after resource clean up There are cases after NPIV deletion where the fabric switch still believes the NPIV is logged into the fabric. This occurs when a vport is unregistered before the Remove All DA_ID CT and LOGO ELS are sent to the fabric. Currently fc_remove_host(), which calls dev_loss_tmo for all D_IDs including the fabric D_ID, removes the last ndlp reference and frees the ndlp rport object. This sometimes causes the race condition where the final DA_ID and LOGO are skipped from being sent to the fabric switch. Fix by moving the fc_remove_host() and scsi_remove_host() calls after DA_ID and LOGO are sent.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue affects Fibre Channel environments using lpfc NPIV virtual ports. During NPIV deletion, cleanup could happen in the wrong order, leaving the fabric switch believing a virtual port is still logged in. The public sources do not describe data theft, privilege escalation, or remote code execution.

Executive priority

Treat this as targeted operational risk for Fibre Channel storage environments, not a broad internet-facing emergency. Prioritize affected storage hosts through normal kernel patch governance unless vendor guidance adds stronger impact details.

Technical view

The lpfc driver could call fc_remove_host() and scsi_remove_host() before DA_ID CT and LOGO ELS messages were sent. That could drop the last ndlp reference, free the rport object, and skip final fabric logout cleanup. The fix moves transport unregistration after resource cleanup.

Likely exposure

Exposure appears limited to Linux systems using the lpfc SCSI/Fibre Channel driver with NPIV vports, especially where NPIV deletion occurs. Distribution-specific affected package versions are not provided in the source bundle.

Exploitation context

CISA KEV status is false in the supplied data, and no cited source states active exploitation. The available description reads as an operational race condition in storage fabric cleanup rather than a published exploit scenario.

Researcher notes

The public record lacks CVSS, CWE, detailed impact, and exploitability analysis. The concrete evidence is the kernel fix rationale: moving transport unregistration after DA_ID and LOGO completion to prevent stale fabric login state.

Mitigation direction

  • Check Linux vendor kernel advisories for CVE-2024-36952 coverage.
  • Update to a kernel containing the referenced stable fixes.
  • Prioritize hosts using lpfc with NPIV virtual ports.
  • Plan storage maintenance windows where kernel updates require reboot.
  • Monitor vendor guidance if distribution backport status is unclear.

Validation and detection

  • Inventory Linux hosts using the lpfc driver and NPIV vports.
  • Compare running kernel packages against vendor-fixed builds.
  • Review change records for recent NPIV deletion or vport lifecycle activity.
  • Check fabric switch state for stale NPIV logins after deletion.
  • Confirm patched kernels include the referenced lpfc cleanup ordering fix.
Prepared
Confidence
medium
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
2ADP providers
6Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux92d7f7b0cde3ad2260e7462b40867b57efd49851, 92d7f7b0cde3ad2260e7462b40867b57efd49851, 92d7f7b0cde3ad2260e7462b40867b57efd49851, 92d7f7b0cde3ad2260e7462b40867b57efd49851, 92d7f7b0cde3ad2260e7462b40867b57efd49851unaffected
LinuxLinux2.6.23, 0, 5.15.159, 6.1.91, 6.6.31, 6.8.10, 6.9affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.