---
id: CVE-2026-90304
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ARM: 9484/1: enable interrupts when unhandled user faults are triggered

  PREEMPT_RT requires interrupts to be enabled when sending signals.

  When do_DataAbort()/do_Pref…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ARM: 9484/1: enable interrupts when unhandled user faults are triggered

  PREEMPT_RT requires interrupts to be enabled when sending signals.

  When do_DataAbort()/do_Pref…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= c6e61c06d6061750597e79c598acb5dead44c35b <
    8d7cbc6df9632d334b21c4be66ccdde76a08fb13
  - >-
    Linux >= c6e61c06d6061750597e79c598acb5dead44c35b <
    e79ca91165d4fd18549c536abdb86101e889052f
  - Linux 7.1
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:17:28.050'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90304'
references:
  - url: 'https://git.kernel.org/stable/c/8d7cbc6df9632d334b21c4be66ccdde76a08fb13'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e79ca91165d4fd18549c536abdb86101e889052f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-17T16:21:47.828Z'
epss: 0.00198
epssPercentile: 0.08481
---

## Overview

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

ARM: 9484/1: enable interrupts when unhandled user faults are triggered

PREEMPT_RT requires interrupts to be enabled when sending signals.

When do_DataAbort()/do_PrefetchAbort() triggers unhandled user faults,
that is `inf->fn()` return a non-zero value, and the interrupts are not
enabled within the hook function, force_sig_fault() will be called
with interrupts disabled.

This can be triggered by user programs executing the bkpt instruction,
with kernel config CONFIG_PERF_EVENTS=n.

Enable interrupts in do_DataAbort()/do_PrefetchAbort() when unhandled
user faults are triggered to fix the issue.

## Remediation

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