CVE-2026-89861Hinoki check available

Use-after-free via unheld vport reference

Published Sep 16, 2026 · Updated Sep 16, 2026

Use-after-free in the qla2xxx SCSI driver in Linux allows attackers to corrupt kernel memory via unspecified vectors. In qla24xx_report_id_acquisition(), the format 1 path drops vport_slock and then updates a virtual-port object without retaining a reference, allowing concurrent deallocation to free it first. Reachability requires report-ID acquisition to race with virtual-port teardown; no privilege level or remote entry path has been published.

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

Use-after-free in the qla2xxx SCSI driver in Linux allows attackers to corrupt kernel memory via unspecified vectors. In qla24xx_report_id_acquisition(), the format 1 path drops vport_slock and then updates a virtual-port object without retaining a reference, allowing concurrent deallocation to free it first. Reachability requires report-ID acquisition to race with virtual-port teardown; no privilege level or remote entry path has been published.

The record

CVE
CVE-2026-89861
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=2.6.23
  2. Affected versionversion=2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 <267533b28ddf2c9223d30ad7e6960fa9e936428e
  3. Affected versionversion=2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 <47272152a13d202d98496208f9bf382c1cf4d4fb
  4. Affected versionversion=2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 <4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69
  5. Affected versionversion=2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 <793cedee296fd819bfadc2a7ec4d52faf9c09a0a
  6. Affected versionversion=2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 <d09ef32af1e05d79f29b460521a20bc4e6fd2ecf
  7. Affected versionversion=2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 <d556f899964d184e6cb788f3fa9dcddcafe1ab2d
  8. Affected versionversion=2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 <f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297
  9. Affected versionversion=2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 <f8d2eb510c063a8ca79a5dc766a4303d3925fe83

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.23; version=2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 <267533b28ddf2c9223d30ad7e6960fa9e936428e; version=2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 <47272152a13d202d98496208f9bf382c1cf4d4fb; version=2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 <4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69; version=2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 <793cedee296fd819bfadc2a7ec4d52faf9c09a0a; version=2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 <d09ef32af1e05d79f29b460521a20bc4e6fd2ecf; version=2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 <d556f899964d184e6cb788f3fa9dcddcafe1ab2d; version=2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 <f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297; version=2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 <f8d2eb510c063a8ca79a5dc766a4303d3925fe83

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.

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)
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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