CVE-2026-89844

Host-map corruption via unlocked concurrent update

Published Sep 16, 2026 · Updated Sep 16, 2026

Race condition in Linux's qla2xxx SCSI driver allows attackers to corrupt the host-map btree during report-ID processing. The format-1 path in qla24xx_report_id_acquisition() releases vport_slock before qla_update_host_map() mutates the shared ha->host_map btree. Reaching the flaw requires concurrent host-map updates on a system using the qla2xxx Fibre Channel driver; the published record establishes btree corruption but no further security impact.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Race condition in Linux's qla2xxx SCSI driver allows attackers to corrupt the host-map btree during report-ID processing. The format-1 path in qla24xx_report_id_acquisition() releases vport_slock before qla_update_host_map() mutates the shared ha->host_map btree. Reaching the flaw requires concurrent host-map updates on a system using the qla2xxx Fibre Channel driver; the published record establishes btree corruption but no further security impact.

The record

CVE
CVE-2026-89844
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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?

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  1. Affected versionversion=430eef03a763e5e76a371ba6d02779ae4a64b6ea <6ed66e2a67bbd22877008ff9aa64bd574a7fc011
  2. Affected versionversion=430eef03a763e5e76a371ba6d02779ae4a64b6ea <776e4e8cbcf155302f430ce9793d1502e3c113a0
  3. Affected versionversion=430eef03a763e5e76a371ba6d02779ae4a64b6ea <7944039ba9cb5c3a935d17c91004e3b8649ff58e
  4. Affected versionversion=430eef03a763e5e76a371ba6d02779ae4a64b6ea <7d0b3f745efb24c0aac5e06b49b3420bc65d23b9
  5. Affected versionversion=430eef03a763e5e76a371ba6d02779ae4a64b6ea <e8f1b0cb9782338c6341ceed816e9c1243743cdd
  6. Affected versionversion=6.3

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=430eef03a763e5e76a371ba6d02779ae4a64b6ea <6ed66e2a67bbd22877008ff9aa64bd574a7fc011; version=430eef03a763e5e76a371ba6d02779ae4a64b6ea <776e4e8cbcf155302f430ce9793d1502e3c113a0; version=430eef03a763e5e76a371ba6d02779ae4a64b6ea <7944039ba9cb5c3a935d17c91004e3b8649ff58e; version=430eef03a763e5e76a371ba6d02779ae4a64b6ea <7d0b3f745efb24c0aac5e06b49b3420bc65d23b9; version=430eef03a763e5e76a371ba6d02779ae4a64b6ea <e8f1b0cb9782338c6341ceed816e9c1243743cdd; version=6.3

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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