CVE-2026-89855Hinoki check available

Corrupted flash-version reads via unserialized register access

Published Sep 16, 2026 · Updated Sep 16, 2026

Race condition in the qla2xxx SCSI driver in Linux allows local users to corrupt cached flash-version reads during concurrent flash access. The sysfs reset path calls get_flash_version() without holding ha->optrom_mutex, allowing its hardware-register reads to interleave with serialized VPD or optrom operations. Reaching the flaw requires the reset operation to race with another flash operation on qla2xxx-managed hardware; the disclosed consequence is corrupted reads.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Race condition in the qla2xxx SCSI driver in Linux allows local users to corrupt cached flash-version reads during concurrent flash access. The sysfs reset path calls get_flash_version() without holding ha->optrom_mutex, allowing its hardware-register reads to interleave with serialized VPD or optrom operations. Reaching the flaw requires the reset operation to race with another flash operation on qla2xxx-managed hardware; the disclosed consequence is corrupted reads.

The record

CVE
CVE-2026-89855
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.12
  2. Affected versionversion=8c2cf7d4e387d003259488522523807f25576427 <31bf2714abbb0aa5a8a03d15038f8920e1c74b21
  3. Affected versionversion=8c2cf7d4e387d003259488522523807f25576427 <33735490789e5417851752974c0b1d23125559cd
  4. Affected versionversion=8c2cf7d4e387d003259488522523807f25576427 <75460967619eda720c9a03767729157ffd171d8c
  5. Affected versionversion=8c2cf7d4e387d003259488522523807f25576427 <8d116137119371349fb09685fe05413d8fc92efe
  6. Affected versionversion=8c2cf7d4e387d003259488522523807f25576427 <9cef42a073a0bdeee7fb1b47221cda222d330d2a
  7. Affected versionversion=8c2cf7d4e387d003259488522523807f25576427 <ae979c549cba684e67b6c047140f3a8d2439b298
  8. Affected versionversion=8c2cf7d4e387d003259488522523807f25576427 <f1fc052f2a5890ea6dba80d50254dd6258b13386
  9. Affected versionversion=8c2cf7d4e387d003259488522523807f25576427 <f606ed93de0c4f1e7e3618779e9fad731455314a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=3.12; version=8c2cf7d4e387d003259488522523807f25576427 <31bf2714abbb0aa5a8a03d15038f8920e1c74b21; version=8c2cf7d4e387d003259488522523807f25576427 <33735490789e5417851752974c0b1d23125559cd; version=8c2cf7d4e387d003259488522523807f25576427 <75460967619eda720c9a03767729157ffd171d8c; version=8c2cf7d4e387d003259488522523807f25576427 <8d116137119371349fb09685fe05413d8fc92efe; version=8c2cf7d4e387d003259488522523807f25576427 <9cef42a073a0bdeee7fb1b47221cda222d330d2a; version=8c2cf7d4e387d003259488522523807f25576427 <ae979c549cba684e67b6c047140f3a8d2439b298; version=8c2cf7d4e387d003259488522523807f25576427 <f1fc052f2a5890ea6dba80d50254dd6258b13386; version=8c2cf7d4e387d003259488522523807f25576427 <f606ed93de0c4f1e7e3618779e9fad731455314a

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

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
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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