CVE-2022-49534

Local service interruption via NPIV PLOGI memory leak

Published Feb 26, 2025 · Updated May 11, 2026

Memory leak in the lpfc SCSI driver in Linux allows local users to interrupt service through rejected NPIV PLOGI requests. The lpfc_ignore_els_cmpl() and lpfc_els_rsp_reject() failure paths leave login_mbox and service-parameter context buffers allocated after an NPIV PLOGI_RJT. Reachability requires an lpfc-backed Fibre Channel adapter with an NPIV virtual port and the rejection path; repeated leaks can exhaust kernel memory and interrupt service.

CVSS severity5.5
Medium
EPSS probability0.23%
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 lpfc SCSI driver in Linux allows local users to interrupt service through rejected NPIV PLOGI requests. The lpfc_ignore_els_cmpl() and lpfc_els_rsp_reject() failure paths leave login_mbox and service-parameter context buffers allocated after an NPIV PLOGI_RJT. Reachability requires an lpfc-backed Fibre Channel adapter with an NPIV virtual port and the rejection path; repeated leaks can exhaust kernel memory and interrupt service.

The record

CVE
CVE-2022-49534
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE 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=858c9f6c19c6f9bf86cbbc64ce0d17c61d6131b8 <672d1cb40551ea9c95efad43ab6d45e4ab4e015f
  3. Affected versionversion=858c9f6c19c6f9bf86cbbc64ce0d17c61d6131b8 <c00df0f34a6d5e14da379f96ea67e501ce67b002

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.23; version=858c9f6c19c6f9bf86cbbc64ce0d17c61d6131b8 <672d1cb40551ea9c95efad43ab6d45e4ab4e015f; version=858c9f6c19c6f9bf86cbbc64ce0d17c61d6131b8 <c00df0f34a6d5e14da379f96ea67e501ce67b002

Published CVSS scores

5.5NVDCVSS: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.

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-401Missing Release of Memory after Effective Lifetime
T1499Endpoint Denial of Service

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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