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NVD / CVE Program· CNA Linux

CVE-2026-89861: scsi: qla2xxx: Hold vport reference in qla24xx_report_id_acquisition()

HighCVSS 8.1 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 32/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.58% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: Linux Linux 267533b28ddf2c9223d30ad7e6960fa9e936428e, 47272152a13d202d98496208f9bf382c1cf4d4fb, 4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 267533b28ddf2c9223d30ad7e6960fa9e936428e, 47272152a13d202d98496208f9bf382c1cf4d4fb, 4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Hold vport reference in qla24xx_report_id_acquisition() In the format 1 path, the virtual port is located on ha->vp_list while holding vport_slock, but the lock is dropped before vp is used: qla_update_host_map() is called and VP_IDX_ACQUIRED/REGISTER_FC4_NEEDED/ REGISTER_FDMI_NEEDED are set on vp. No reference is taken across that window, so a concurrent qla24xx_deallocate_vp_id() can tear the vport down and free it, leading to a use-after-free. Take a vport reference (vref_count) under vport_slock when the matching vp is found, and drop it after the last use of vp. qla24xx_deallocate_vp_id() waits for vref_count to reach zero before unlinking and freeing the vport, so the pointer stays valid. This matches the reference idiom already used by the other ha->vp_list traversals.

Published
Sep 16, 2026
Updated
Oct 19, 2026
EPSS
0.5% · 48th percentile
CWE
—

Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
32 / 40 · 8.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CNA vs NVD score

NVD
—
CNA · Linux
8.1
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-89861

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 2.6.23affected
    • 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 and later · before d09ef32af1e05d79f29b460521a20bc4e6fd2ecfaffected · git
    • 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 and later · before 4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69affected · git
    • 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 and later · before 267533b28ddf2c9223d30ad7e6960fa9e936428eaffected · git
    • 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 and later · before f8d2eb510c063a8ca79a5dc766a4303d3925fe83affected · git
    • 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 and later · before f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297affected · git
    • 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 and later · before 47272152a13d202d98496208f9bf382c1cf4d4fbaffected · git
    • 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 and later · before d556f899964d184e6cb788f3fa9dcddcafe1ab2daffected · git
    • 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 and later · before 793cedee296fd819bfadc2a7ec4d52faf9c09a0aaffected · git
    • before 2.6.23not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-89859Sep 16, 2026 · scsi: qla2xxx: Zero dport diagnostics buffer to avoid info leak
    0Monitor
  • ← EarlierCVE-2026-89860Sep 16, 2026 · scsi: qla2xxx: Initialize NVMe abort_work once at submission
    35Monitor
  • Later →CVE-2026-89862Sep 16, 2026 · scsi: qla2xxx: Fix BSG job leak on validate flash image error path
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux267533b28ddf2c9223d30ad7e6960fa9e936428eVendor (CNA)
Linux Linux47272152a13d202d98496208f9bf382c1cf4d4fbVendor (CNA)
Linux Linux4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69Vendor (CNA)
Linux Linux793cedee296fd819bfadc2a7ec4d52faf9c09a0aVendor (CNA)
Linux Linuxd09ef32af1e05d79f29b460521a20bc4e6fd2ecfVendor (CNA)
Linux Linuxd556f899964d184e6cb788f3fa9dcddcafe1ab2dVendor (CNA)
Linux Linuxf6b3bcc7cb2f4c37464958b9fd97dc7f185ea297Vendor (CNA)
Linux Linuxf8d2eb510c063a8ca79a5dc766a4303d3925fe83Vendor (CNA)
azl3 kernel 6.6.150.1-1 on Azure Linux 3.0—Microsoft (MSRC)
azl3 kernel 6.6.152.1-1 on Azure Linux 3.06.6.157.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Not on record for this CVE: patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records