---
id: CVE-2026-90410
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  spi: davinci: switch to managed controller allocation

  The controller is allocated with the non-managed spi_alloc_host() while
  the interrupt is registered with devm_req…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  spi: davinci: switch to managed controller allocation

  The controller is allocated with the non-managed spi_alloc_host() while
  the interrupt is registered with devm_req…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 5b3bb5963ff23a344062aba04937533a6f575761 <
    29e37f768f35592e26477f703649bd2e6f18d857
  - >-
    Linux >= 5b3bb5963ff23a344062aba04937533a6f575761 <
    f9452eba71fbfcee55c0b8e030ee3615e9f75f65
  - >-
    Linux >= 5b3bb5963ff23a344062aba04937533a6f575761 <
    3b544072185c3d19ddec621ec9f6897ea2d10ee3
  - >-
    Linux >= 5b3bb5963ff23a344062aba04937533a6f575761 <
    1a7958ce58dc95b06615df00c120ece4eb9ccc86
  - >-
    Linux >= 5b3bb5963ff23a344062aba04937533a6f575761 <
    ea408a05dc8f18b4a184b88d6e19d2fd1acc1527
  - Linux 3.14
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:17:40.910'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90410'
references:
  - url: 'https://git.kernel.org/stable/c/1a7958ce58dc95b06615df00c120ece4eb9ccc86'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/29e37f768f35592e26477f703649bd2e6f18d857'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3b544072185c3d19ddec621ec9f6897ea2d10ee3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ea408a05dc8f18b4a184b88d6e19d2fd1acc1527'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f9452eba71fbfcee55c0b8e030ee3615e9f75f65'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-17T16:21:47.797Z'
epss: 0.00209
epssPercentile: 0.09732
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

spi: davinci: switch to managed controller allocation

The controller is allocated with the non-managed spi_alloc_host() while
the interrupt is registered with devm_request_threaded_irq().  During
removal, spi_bitbang_stop() only unregisters the controller; the
subsequent spi_controller_put() then frees the controller together with
its embedded davinci_spi devdata, which is the IRQ handler's dev_id.
The devm_request_threaded_irq() release action (free_irq()), which
drains the handler, does not run until after .remove() returns.  A late
or latched interrupt can therefore reach davinci_spi_irq() and
dereference already-freed memory.

Switch to devm_spi_alloc_host() so that the devres LIFO order releases
the controller only after free_irq() has drained the handler, and drop
the now-redundant spi_controller_put() from .remove().  The probe error
path is simplified to direct returns.

The clock is acquired with devm_clk_get_enabled(), which is registered
after the IRQ and thus released before it by the devres LIFO order.
Drain the interrupt explicitly with devm_free_irq() before disabling the
controller so that a late interrupt cannot access the registers of a
clock-gated controller.

This issue was found by an in-house static analysis tool.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.