---
id: CVE-2026-89977
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  accel/ethosu: check MMIO mapping errors in probe

  devm_platform_ioremap_resource() returns an error pointer when the register
  resource cannot be mapped
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  accel/ethosu: check MMIO mapping errors in probe

  devm_platform_ioremap_resource() returns an error pointer when the register
  resource cannot be mapped. ethosu_probe() …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b <
    f7aad73b481194e3f0efba9688e9a5914bbd036b
  - >-
    Linux >= 5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b <
    7ab64476a610fe65858fdc37c7a30caa13e334ac
  - Linux 6.19
published: '2026-09-16'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T11:17:08.560'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89977'
references:
  - url: 'https://git.kernel.org/stable/c/7ab64476a610fe65858fdc37c7a30caa13e334ac'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f7aad73b481194e3f0efba9688e9a5914bbd036b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-16T10:53:53.952Z'
epss: 0.00189
epssPercentile: 0.08812
---

## Overview

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

accel/ethosu: check MMIO mapping errors in probe

devm_platform_ioremap_resource() returns an error pointer when the register
resource cannot be mapped. ethosu_probe() stores it and continues until
initialization dereferences it through MMIO accessors.

Return the mapping error before initializing the device.

## Remediation

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