---
id: CVE-2026-90249
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes

  The IIO core does not filter duplicate writes to the event enable
  attribute, so writing the sa…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes

  The IIO core does not filter duplicate writes to the event enable
  attribute, so writing the sa…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 97d642e23037c5545266f9564c9b81e6db81b122 <
    b2d7a97d75b648a643f60d77f4d6d70161268855
  - >-
    Linux >= 97d642e23037c5545266f9564c9b81e6db81b122 <
    685d9d1e5c47e024413981fb7eddab86132b04a1
  - >-
    Linux >= 97d642e23037c5545266f9564c9b81e6db81b122 <
    56fe8e5f313a64e458bb6f8b982de925345e21a7
  - >-
    Linux >= 97d642e23037c5545266f9564c9b81e6db81b122 <
    8e76ab81319858736ccf23141e9415f9a1869337
  - >-
    Linux >= 97d642e23037c5545266f9564c9b81e6db81b122 <
    70b9482926ca92862460e659f5e5fde99ae0b4fa
  - >-
    Linux >= 97d642e23037c5545266f9564c9b81e6db81b122 <
    0fc740c25c9abb25113398ebb58e2f2ce57741a7
  - >-
    Linux >= 97d642e23037c5545266f9564c9b81e6db81b122 <
    470edb012b1d9a4fba1cd59e329e60f0798c791a
  - >-
    Linux >= 97d642e23037c5545266f9564c9b81e6db81b122 <
    579c049b4cb6fc72ce2c505fc5334540be0efcd3
  - Linux 5.7
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:17:21.097'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90249'
references:
  - url: 'https://git.kernel.org/stable/c/0fc740c25c9abb25113398ebb58e2f2ce57741a7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/470edb012b1d9a4fba1cd59e329e60f0798c791a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/56fe8e5f313a64e458bb6f8b982de925345e21a7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/579c049b4cb6fc72ce2c505fc5334540be0efcd3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/685d9d1e5c47e024413981fb7eddab86132b04a1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/70b9482926ca92862460e659f5e5fde99ae0b4fa'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8e76ab81319858736ccf23141e9415f9a1869337'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b2d7a97d75b648a643f60d77f4d6d70161268855'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-17T16:21:47.843Z'
epss: 0.0022
epssPercentile: 0.11073
---

## Overview

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

iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes

The IIO core does not filter duplicate writes to the event enable
attribute, so writing the same value twice invokes
write_event_config() twice. Enabling twice leaks a runtime PM
reference, preventing the device from ever suspending again;
disabling twice underflows the usage count and triggers a
"Runtime PM usage count underflow" warning.

Bail out early when the requested state matches the current state.
While at it, switch to pm_runtime_resume_and_get() so a failed
resume is propagated to userspace instead of silently marking the
event enabled.

## Remediation

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