---
id: CVE-2026-23071
title: 'regmap: Fix race condition in hwspinlock irqsave routine'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  regmap: Fix race condition in hwspinlock irqsave routine

  Previously, the address of the shared member '&map->spinlock_flags' was
  passed directly to 'hwspin_lock_timeou…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 8698b9364710e7bac84b3af07dd410e39c8c2e08 <
    e1a7072bc4f958c9e852dc7e57e39f12b0bb44b5
  - >-
    Linux >= 8698b9364710e7bac84b3af07dd410e39c8c2e08 <
    766e243ae8c8b27087a4cc605752c0d5ee2daeab
  - >-
    Linux >= 8698b9364710e7bac84b3af07dd410e39c8c2e08 <
    f1e2fe26a51eca95b41420af76d22c2e613efd5e
  - >-
    Linux >= 8698b9364710e7bac84b3af07dd410e39c8c2e08 <
    24f31be6ad70537fd7706269d99c92cade465a09
  - >-
    Linux >= 8698b9364710e7bac84b3af07dd410e39c8c2e08 <
    4aab0ca0a0f7760e33edcb4e47576064d05128f5
  - >-
    Linux >= 8698b9364710e7bac84b3af07dd410e39c8c2e08 <
    c2d2cf710dc3ee1a69e00b4ed8de607a92a07889
  - >-
    Linux >= 8698b9364710e7bac84b3af07dd410e39c8c2e08 <
    4b58aac989c1e3fafb1c68a733811859df388250
  - Linux 4.15
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-10T20:40:57.245934Z'
published: '2026-02-04'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T18:25:29.039Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-23071'
references:
  - url: 'https://git.kernel.org/stable/c/e1a7072bc4f958c9e852dc7e57e39f12b0bb44b5'
  - url: 'https://git.kernel.org/stable/c/766e243ae8c8b27087a4cc605752c0d5ee2daeab'
  - url: 'https://git.kernel.org/stable/c/f1e2fe26a51eca95b41420af76d22c2e613efd5e'
  - url: 'https://git.kernel.org/stable/c/24f31be6ad70537fd7706269d99c92cade465a09'
  - url: 'https://git.kernel.org/stable/c/4aab0ca0a0f7760e33edcb4e47576064d05128f5'
  - url: 'https://git.kernel.org/stable/c/c2d2cf710dc3ee1a69e00b4ed8de607a92a07889'
  - url: 'https://git.kernel.org/stable/c/4b58aac989c1e3fafb1c68a733811859df388250'
tags:
  - cve.org
epss: 0.00114
epssPercentile: 0.01409
ingestedAt: '2026-10-19T18:35:50.109Z'
---

## Overview

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

regmap: Fix race condition in hwspinlock irqsave routine

Previously, the address of the shared member '&map->spinlock_flags' was
passed directly to 'hwspin_lock_timeout_irqsave'. This creates a race
condition where multiple contexts contending for the lock could overwrite
the shared flags variable, potentially corrupting the state for the
current lock owner.

Fix this by using a local stack variable 'flags' to store the IRQ state
temporarily.

## Affected

- `Linux >= 8698b9364710e7bac84b3af07dd410e39c8c2e08 < e1a7072bc4f958c9e852dc7e57e39f12b0bb44b5`
- `Linux >= 8698b9364710e7bac84b3af07dd410e39c8c2e08 < 766e243ae8c8b27087a4cc605752c0d5ee2daeab`
- `Linux >= 8698b9364710e7bac84b3af07dd410e39c8c2e08 < f1e2fe26a51eca95b41420af76d22c2e613efd5e`
- `Linux >= 8698b9364710e7bac84b3af07dd410e39c8c2e08 < 24f31be6ad70537fd7706269d99c92cade465a09`
- `Linux >= 8698b9364710e7bac84b3af07dd410e39c8c2e08 < 4aab0ca0a0f7760e33edcb4e47576064d05128f5`
- `Linux >= 8698b9364710e7bac84b3af07dd410e39c8c2e08 < c2d2cf710dc3ee1a69e00b4ed8de607a92a07889`
- `Linux >= 8698b9364710e7bac84b3af07dd410e39c8c2e08 < 4b58aac989c1e3fafb1c68a733811859df388250`
- `Linux 4.15`

## Remediation

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