[CVE-2026-80653][LOW] scsi: hisi_sas: Add slave_destroy interface for v3 hw [ Upstream

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

CVE: CVE-2026-80653
Priority: LOW
AL-KERNEL base severity: LOW
KPANIC flag: NO
Patch: scsi: hisi_sas: Add slave_destroy interface for v3 hw [ Upstream
Commit: cb414aff28e18e6f5cff9f87ea31376ed8af317b
Upstream patch: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=cb414aff28e18e6f5cff9f87ea31376ed8af317b
Original CVE announcement: https://lore.kernel.org/linux-cve-announce/?q=CVE-2026-80653
Analysis date: Fri, 28 Aug 2026 04:34:30 -0400
ActionableScore: 0
ActionableScore lower bound: unknown
Actionable bucket: Ordinary Moderate / Low-like
Manual review required: NO

Summary:
No one-sentence report phrase was found.

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

The original Linux kernel CVE announcement for CVE-2026-80653 is available here:
https://lore.kernel.org/linux-cve-announce/?q=CVE-2026-80653

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: LOW
Manual review required: NO

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

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

CVE-2026-80653	LOW	CHECK WITH IMPACT FROM ORIG NN LOW	Maybe valid. Check manually. Hints by AL-KERNEL: The best (paranoid) CVSS is 'AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H';CWE-362;CWE-459;CWE-703;Other CVSS 'AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L';BEST CVSS score: '4.1';DESCR 'A cleanup ordering race in the hisi_sas v3 driver can trigger a driver core WARNING when a remote PHY link reset and SAS driver rmmod happen at the same time. The device link between the SCSI device and the host adapter can remain in a state that conflicts with driver removal, so __device_links_no_driver reports a warning during device teardown. For the CVSS the PR:H is used because reliable triggering requires administrative control over driver unload and SAS PHY reset operations on the target system. The issue is not network reachable and is tied to local storage hardware management. Impact is mainly a warning and at most denial of service if panic_on_warn is enabled or if the warning disrupts production operation.';NO MANUAL CHECK; ,and ActionableScore result is Ordinary Moderate / Low-like (with actual score 0)	YES	WARNONLY HARDWARE 	YES	NO	checked

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

ActionableScore=0

1. ActionableScore
* Conservative score: 0
* Paranoid score: 0
* Final recommended bucket: **Ordinary Moderate / Low-like**::

2. Signal breakdown
* Hard or unreliable race / special timing required: -1. The WARNING requires concurrent remote PHY link reset and SAS driver rmmod.
* Requires admin/root/CAP_SYS_ADMIN/CAP_SYS_MODULE in typical deployments: -2. Reliable triggering requires driver unload and storage hardware management privileges.
* Rare AND difficult-to-reach subsystem/configuration: -1. The issue is specific to hisi_sas v3 hardware and SAS topology management.
* Reliable kernel crash / strong DoS: +0. The patch and log show a driver core WARNING, not an Oops, panic, UAF, double-free, or corruption primitive.
* Availability impact realistic: +0. Availability impact is mainly relevant only if panic_on_warn is enabled or if the warning disrupts operations.
* Generic memory corruption: +0. No concrete UAF, OOB access, stale callback, refcount misuse, arbitrary write, or object confusion is shown.
* Firmware-mediated external influence: +0. The remote PHY state is involved, but the reliable trigger still depends on local privileged driver removal and reset sequencing.
* Call-site confidence: high. The relevant call path and changed cleanup hook are present in the supplied patch and commit message.

3. Reachability analysis
The realistic trigger is local and administrative. An attacker would need control over SAS PHY reset activity and simultaneous rmmod or equivalent driver teardown. Namespaces or containers do not normally reduce this to an unprivileged trigger because module unload and host storage hardware control are not delegated to ordinary containers. The path is not network reachable and is specific to systems using the hisi_sas v3 driver. The affected condition is a narrow teardown race in device link cleanup rather than a broadly exposed data path.

4. Severity interpretation
This behaves like a Low or ordinary Moderate reliability issue, not an actionable Moderate or Important kernel vulnerability. The demonstrated impact is a WARNING in __device_links_no_driver during device teardown. Theoretical DoS exists mainly through panic_on_warn, but the patch does not support memory corruption, privilege escalation, confidentiality impact, or integrity impact. Conservative triage can auto-close or defer it unless the product treats WARN as fatal in production.

5. One-sentence report phrase
A cleanup ordering race in hisi_sas v3 can trigger a driver core WARNING when SAS remote PHY reset races with driver unload, but exploitation requires local administrative storage and module control and no memory corruption or privilege escalation primitive is indicated.

6. Manual review recommendation
NO MANUAL CHECK NEEDED
The patch shows a privileged local cleanup ordering race with WARNING-only impact and no supported memory corruption, security-boundary bypass, or network reachability.

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

Patch: scsi: hisi_sas: Add slave_destroy interface for v3 hw [ Upstream
Commit: cb414aff28e18e6f5cff9f87ea31376ed8af317b
Upstream URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=cb414aff28e18e6f5cff9f87ea31376ed8af317b

Changed files:
  drivers/base/core.c
  drivers/scsi/hisi_sas/hisi_sas_v3_hw.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=cb414aff28e18e6f5cff9f87ea31376ed8af317b

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

The original Linux kernel CVE announcement for CVE-2026-80653 can be found here:
https://lore.kernel.org/linux-cve-announce/?q=CVE-2026-80653

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:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
  The Best / paranoid CVSS vector: AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
  The Best / paranoid CVSS score: 4.1

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: unknown
  Paranoid ActionableScore: 0

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: LOW
KPANIC detected for this report: NO
Published priority for this report (same as in Subject): LOW

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).