[CVE-2026-89860][MODERATE 7.0] scsi: qla2xxx: Initialize NVMe abort_work once at submission

[AL-KERNEL <alkernel@kernelcve.org>]

CVE: CVE-2026-89860
Priority: MODERATE 7.0
AL-KERNEL base severity: MODERATE
KPANIC flag: YES
Patch: scsi: qla2xxx: Initialize NVMe abort_work once at submission
Commit: b403700ac62fbf3c310196386e125879a182efcf
Upstream patch: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=b403700ac62fbf3c310196386e125879a182efcf
Original CVE announcement: https://lore.kernel.org/linux-cve-announce/?q=CVE-2026-89860
Analysis date: Wed, 16 Sep 2026 12:33:58 -0400
ActionableScore: 5
ActionableScore lower bound: 4
Actionable bucket: Actionable Moderate / Strong Important candidate requiring manual review
Manual review required: YES

Summary:
No one-sentence report phrase was found.

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ABOUT THIS REPORT
======================================================================

The original Linux kernel CVE announcement for CVE-2026-89860 is available here:
https://lore.kernel.org/linux-cve-announce/?q=CVE-2026-89860

The original announcement does not normally provide a security severity
estimate, CVSS assessment, or enough information to determine whether the
reported kernel bug represents a practically relevant security issue.

This report was generated by AL-KERNEL, an AI-assisted Linux kernel
vulnerability analysis system developed by Alexander Larkin. It combines
an autonomous classifier with LLM-assisted technical analysis and a
separate ActionableScore mechanism.

The purpose of this report is to prioritize Linux kernel CVEs before
manual review, identify cases that require prompt investigation, and
support automatic closure of issues that are unlikely to have meaningful
security impact.

Published priority for this report: MODERATE 7.0
Manual review required: YES

A detailed explanation of the methodology and priority rules is included
at the end of this message.

======================================================================
AL-KERNEL CLASSIFICATION RESULT
======================================================================

CVE-2026-89860	MODERATE	https://www.kernelcve.org/list/?q=CVE-2026-89860 CHECK WITH IMPACT FROM ORIG NN MODERATE	Maybe valid. Check manually. Hints by AL-KERNEL: The best (paranoid) CVSS is 'AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H';CWE-362;CWE-665;*CWE-787;Other CVSS 'AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H';BEST CVSS score: '6.4';DESCR 'A race in the qla2xxx FC-NVMe abort path can reinitialize priv abort_work with INIT_WORK() while the same work_struct is already queued. A repeated abort for the same command, for example from concurrent transport teardown and a timeout driven abort, can reset workqueue state and corrupt the workqueue list. This can lead to a kernel crash or a looping worker, so the base impact is denial of service. For the CVSS the PR:N is used for the paranoid storage fabric scenario because an attacker controlling or disrupting the FC-NVMe target or fabric may trigger repeated abort conditions without a local account on the host. The issue is adjacent network reachable through the storage fabric rather than reachable over the public Internet. Impact is at least availability loss and in worst case may allow limited confidentiality or integrity impact due to kernel memory corruption, so it should be reviewed manually.';YES REQUIRES MANUAL CHECK; ,and ActionableScore result is Actionable Moderate / Strong Important candidate requiring manual review (with actual score 5)	YES	DANGER INIT SIMPLEFIX NVME HARDWARE LINUS KPANIC 	NO	NO	checked

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ACTIONABLESCORE ANALYSIS
======================================================================

ActionableScore=5
ActionableScoreLower=4
PrimitiveClass=CLASS_B
RealUAF=NO
HostAdminRequired=UNKNOWN
NamespaceScopedPrivilege=NO
ImportantCandidate=YES
ManualReview=REQUIRED
AutoDowngradeAllowed=NO

1. ActionableScore

* Raw conservative score: 3
* Conservative score: 4
* Applied conservative floor/cap: manual-review safety floor for concrete active kernel workqueue list corruption, 3 -> 4
* Raw paranoid score: 5
* Paranoid score: 5
* Applied paranoid floor/cap: none
* Final recommended bucket: **Actionable Moderate / Strong Important candidate requiring manual review**::

2. Signal breakdown

Positive signals:

* +2: Concrete active kernel object/list corruption. The patch establishes that INIT_WORK() can reinitialize an already queued work_struct, resetting its list head and pending bit while workqueue state is live.
* +1: Reliable kernel crash / strong DoS. The commit explicitly states that the corrupted workqueue state can lead to crashes or a looping worker.
* +1 paranoid: Adjacent storage-fabric reachability concern. The vulnerable path is in FC-NVMe abort processing, and repeated aborts may be influenced by target/fabric disruption or teardown/timeout interactions, but this is not proven as direct public network reachability.
* +1 paranoid: Unresolved active-list corruption leverage. The corrupted object is not passive metadata. It is an active workqueue structure participating in kernel scheduling/list operations, so manual Important-vs-Moderate review is justified.

Negative or non-awarded signals:

* Controlled reclaim not demonstrated.
* Arbitrary or directed kernel write not demonstrated.
* Callback or function-pointer control not demonstrated.
* Real UAF not established. This is workqueue state corruption from reinitialization of a live queued work item, not a demonstrated post-free use.
* Concrete repeated release/refcount signal not awarded. The final kref_put()/release callback is mentioned for safe reuse after completion, but the bug is not a second put/release on the same dangling reference.
* C/I impact not awarded conservatively. Limited C:L/I:L may be defensible only as paranoid CVSS-style treatment due to kernel list corruption, not as an established ActionableScore disclosure or integrity primitive.
* Extra availability point not awarded. The crash and looping worker are the same availability consequence.
* Race/timing penalty not applied. The condition involves repeated aborts and concurrency, but the supplied evidence does not prove a narrow one-shot race that is externally uncontrollable.
* Hardware rarity penalty not applied. qla2xxx is hardware-specific, but the prompt requires more than driver specificity to subtract for rare hardware.

3. Reachability analysis

The vulnerable functions are qla_nvme_fcp_abort() and qla_nvme_ls_abort() in the qla2xxx FC-NVMe path. A repeated abort for the same command can occur from concurrent transport teardown and timeout-driven abort handling.

The complete attacker model is not fully proven from the supplied patch. A local host administrator can likely influence driver teardown and recovery, but host-admin-only reachability is not positively established. A storage-fabric attacker or misbehaving FC-NVMe target may be able to induce abort and timeout behavior without a local account on the host, but the patch does not fully prove that one external attacker controls the complete trigger sequence.

Therefore:

* HostAdminRequired=UNKNOWN, not YES, because host-admin requirement is not positively established.
* HostAdminRequired is not NO, because below-host-admin complete triggering is not fully proven.
* NamespaceScopedPrivilege=NO, because this is not a namespace-scoped capability path.
* Prior setup requires qla2xxx FC-NVMe deployment and suitable hardware/fabric configuration.
* The bug is adjacent/storage-fabric exposed rather than ordinary AV:N public Internet exposed.
* Race repeatability appears plausible through repeated abort conditions, but exact reliability is not established.

4. Primitive and severity interpretation

The exact primitive is reinitialization of a queued work_struct. INIT_WORK() resets internal workqueue state, including list linkage and pending state. If called while the same work item is already queued, it can corrupt the workqueue list.

This is an active structured kernel object corruption issue, not fixed stale storage. It is also not a demonstrated UAF and not a concrete repeated refcount release. The demonstrated consequence is kernel crash or a looping worker. The speculative consequence is stronger exploitation from active kernel list corruption, but no controlled reclaim, arbitrary write, callback control, or privilege escalation is established.

PrimitiveClass=CLASS_B because a real active kernel list/object corruption primitive exists, but it is not sufficiently controlled to be CLASS_A. ImportantCandidate=YES because corruption of live workqueue state leaves meaningful exploitation leverage unresolved. AutoDowngradeAllowed=NO because automatically closing this as ordinary crash-only DoS would discard a concrete active kernel corruption primitive.

Likely operational severity is actionable Moderate, with Strong Important review warranted if external FC-NVMe fabric triggering or more controlled workqueue corruption can be demonstrated.

5. One-sentence report phrase

A race in qla2xxx FC-NVMe abort handling can reinitialize an already queued abort_work item, corrupting live workqueue state and causing a kernel crash or looping worker, with storage-fabric triggered exploitation plausible but not fully proven.

6. Manual review recommendation

MANUAL CHECK REQUIRED

Concrete active kernel workqueue list corruption is established, and the complete reachability and exploitation leverage are not resolved by the small patch.

7. Call-site confidence

Call-site confidence: medium

======================================================================
UPSTREAM PATCH SUMMARY
======================================================================

Patch: scsi: qla2xxx: Initialize NVMe abort_work once at submission
Commit: b403700ac62fbf3c310196386e125879a182efcf
Upstream URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=b403700ac62fbf3c310196386e125879a182efcf

Commit description:

qla_nvme_fcp_abort() and qla_nvme_ls_abort() ran INIT_WORK() on
priv->abort_work immediately before schedule_work(). INIT_WORK()
reinitializes the work_struct, resetting its list head and clearing the
pending bit. If an abort is issued more than once for the same command
(for example, concurrent transport teardown and a timeout-driven abort),
the second INIT_WORK() reinitializes a work item that is already queued,
which can corrupt the workqueue list and lead to crashes or a looping
worker.

Initialize priv->abort_work once at command submission, next to the
existing per-command spin_lock_init(&priv->cmd_lock), and leave only
schedule_work() in the abort paths. schedule_work() already does nothing
when the work item is still pending, so a repeated abort no longer
disturbs an in-flight work item. The command is not returned to the
transport until the final kref_put()/release callback runs after
abort_work has completed, so the work item is idle before priv is reused
and the single submission-time INIT_WORK() is safe.

Fixes: e473b30 ("scsi: qla2xxx: Add FC-NVMe abort processing")
Cc: stable@vger.kernel.org
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Reviewed-by: Hannes Reinecke <hare@kernel.org>
Link: https://patch.msgid.link/20260723050413.3897522-52-njavali@marvell.com
Signed-off-by: Martin K. Petersen (Oracle) <mkp@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Changed files:
  drivers/scsi/qla2xxx/qla_nvme.c

Diff excerpt:

Not included in this email. See the upstream URL for the full patch.

Full patch:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=b403700ac62fbf3c310196386e125879a182efcf

======================================================================
DETAILED REPORT METHODOLOGY
======================================================================

The original Linux kernel CVE announcement for CVE-2026-89860 can be found here:
https://lore.kernel.org/linux-cve-announce/?q=CVE-2026-89860

The original CVE announcement normally does not include a security-level
estimate. In particular, it may not contain a CVSS assessment, an impact
level, or enough information to determine whether the reported bug is a
practically relevant security issue. One purpose of this parallel CVE list
is to provide that missing technical and prioritization information.

The original goal of the AL-KERNEL project was to prioritize Linux kernel
CVE analysis automatically before manual review. The system can also help
identify non-security issues that may be suitable for automatic closure.

This report was generated by AL-KERNEL, an AI-assisted Linux kernel
vulnerability analysis system developed by Alexander Larkin.

The first analysis stage combines an autonomous classifier with additional
LLM-based analysis. The autonomous classifier runs locally on a CPU and is
based on a backpropagation neural network. Together, these mechanisms
produce a technical vulnerability description, identify likely weakness
types, estimate CVSS severity, and provide input for ActionableScore.

Two CVSS estimates are retained because incomplete kernel vulnerability
information often permits more than one defensible interpretation:

  Conservative CVSS vector: AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  The Best / paranoid CVSS vector: AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
  The Best / paranoid CVSS score: 6.4

The conservative vector represents a lower-impact interpretation.
The Best/paranoid vector intentionally represents a plausible upper-bound
interpretation and should not automatically be treated as demonstrated
real-world impact.

CVSS may also need to be adjusted for a particular Linux deployment,
because actual reachability, privileges, enabled kernel configuration,
hardware, namespaces, exposed device nodes, and other environmental
conditions can differ significantly between systems.

A separate ActionableScore mechanism evaluates practical remediation
urgency. Its analysis may include reachability, attack prerequisites,
subsystem exposure, memory-corruption characteristics, denial-of-service
reliability, and possible confidentiality, integrity, or
privilege-escalation impact.

  Conservative ActionableScore: 4
  Paranoid ActionableScore: 5

The final base severity is taken directly from the second tab-separated
field of the AL-KERNEL classification result. ActionableScore does not
replace or independently override that final AL-KERNEL decision, and
if ActionableScore adjusted impact level of ALKERNEL, then you would see
self-readable flags above like INCREASED_TO_HIGH_BASED_ON_ACTIONABLESCOREHIGHEREQTHAN7.

For an AL-KERNEL result of MODERATE, this report uses the following
additional presentation split:

  ActionableScore below 5   -> MODERATE REGULAR
  ActionableScore 5 or more -> MODERATE 7.0

The distinction between MODERATE REGULAR and MODERATE 7.0 makes it
possible to identify Moderate issues that should receive manual analysis
and fixes before lower-priority MODERATE REGULAR issues. In many cases,
MODERATE REGULAR fixes may wait for a later rebase or routine update.

There is one override in which MODERATE REGULAR becomes MODERATE 7.0
even when the ActionableScore is below 5. When the AL-KERNEL result
contains the KPANIC flag, a MODERATE result is always presented as
MODERATE 7.0. The KPANIC flag selected with few regexps without
usage of AI at all, so it helps to detect cases when Kernel Crash happens
and similar (to filter False-Negative results from the LLM usage).

KPANIC indicates that a reliable kernel crash, kernel panic, or similarly
serious kernel availability impact was identified by the classification
workflow.

AL-KERNEL base severity for this report: MODERATE
KPANIC detected for this report: YES
Published priority for this report (same as in Subject): MODERATE 7.0

These results are intended to support engineering triage. They are
machine-generated estimates, and cases marked for manual review should
be validated by a human security engineer before final disposition.
For more info read docs linked from here: https://kernelcve.org/
(and you can submit you own patch there to generate such a report
for non-existant CVE-id yet).

Note that in many cases this AI tool selects higher severity, than
real is (means you can expect Importants instead of Moderate 7.0 or
Moderates 7.0 instead of regular Moderates). If you see such cases,
please use reply email interface to add additional manual analyses
info to this particular CVE.
And please, please, let me know when you see Lows instead of Importants
or Important instead of Low (because particular for such cases I
need to tune this AI tool to make it better for this one and next similar).
My contact email for such notifications is alexanjelausa@gmail.com (and both
send reply to CVE record itself too and see "reply" button below for howto reply).