---
id: CVE-2026-31523
title: 'nvme-pci: ensure we''re polling a polled queue'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  nvme-pci: ensure we're polling a polled queue

  A user can change the polled queue count at run time. There's a brief
  window during a reset where a hipri task may try to…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 4b04cc6a8f86c4842314def22332de1f15de8523 <
    965e2c943f065122f14282a88d70a8a92e12a4da
  - >-
    Linux >= 4b04cc6a8f86c4842314def22332de1f15de8523 <
    ba167d5982e2eb6ff9356d409eca592ce99555da
  - >-
    Linux >= 4b04cc6a8f86c4842314def22332de1f15de8523 <
    0685dd9cb855ab77fcf3577b4702ba1d6df1c98d
  - >-
    Linux >= 4b04cc6a8f86c4842314def22332de1f15de8523 <
    6f12734c4b619f923a4df0b1a46b8098b187d324
  - >-
    Linux >= 4b04cc6a8f86c4842314def22332de1f15de8523 <
    acbc72dd1a09df53cafcf577259f4678be6afd6d
  - >-
    Linux >= 4b04cc6a8f86c4842314def22332de1f15de8523 <
    b96c7b25eb1b748f3e3b1832ebf028b0b223d7e3
  - >-
    Linux >= 4b04cc6a8f86c4842314def22332de1f15de8523 <
    b222680ba55e018426c4535067a008f1d81a5d21
  - >-
    Linux >= 4b04cc6a8f86c4842314def22332de1f15de8523 <
    166e31d7dbf6aa44829b98aa446bda5c9580f12a
  - Linux 5.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T21:37:23.406892Z'
published: '2026-04-22'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T21:45:05.879Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-31523'
references:
  - url: 'https://git.kernel.org/stable/c/965e2c943f065122f14282a88d70a8a92e12a4da'
  - url: 'https://git.kernel.org/stable/c/ba167d5982e2eb6ff9356d409eca592ce99555da'
  - url: 'https://git.kernel.org/stable/c/0685dd9cb855ab77fcf3577b4702ba1d6df1c98d'
  - url: 'https://git.kernel.org/stable/c/6f12734c4b619f923a4df0b1a46b8098b187d324'
  - url: 'https://git.kernel.org/stable/c/acbc72dd1a09df53cafcf577259f4678be6afd6d'
  - url: 'https://git.kernel.org/stable/c/b96c7b25eb1b748f3e3b1832ebf028b0b223d7e3'
  - url: 'https://git.kernel.org/stable/c/b222680ba55e018426c4535067a008f1d81a5d21'
  - url: 'https://git.kernel.org/stable/c/166e31d7dbf6aa44829b98aa446bda5c9580f12a'
tags:
  - cve.org
epss: 0.00089
epssPercentile: 0.00402
ingestedAt: '2026-11-05T23:41:31.976Z'
---

## Overview

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

nvme-pci: ensure we're polling a polled queue

A user can change the polled queue count at run time. There's a brief
window during a reset where a hipri task may try to poll that queue
before the block layer has updated the queue maps, which would race with
the now interrupt driven queue and may cause double completions.

## Affected

- `Linux >= 4b04cc6a8f86c4842314def22332de1f15de8523 < 965e2c943f065122f14282a88d70a8a92e12a4da`
- `Linux >= 4b04cc6a8f86c4842314def22332de1f15de8523 < ba167d5982e2eb6ff9356d409eca592ce99555da`
- `Linux >= 4b04cc6a8f86c4842314def22332de1f15de8523 < 0685dd9cb855ab77fcf3577b4702ba1d6df1c98d`
- `Linux >= 4b04cc6a8f86c4842314def22332de1f15de8523 < 6f12734c4b619f923a4df0b1a46b8098b187d324`
- `Linux >= 4b04cc6a8f86c4842314def22332de1f15de8523 < acbc72dd1a09df53cafcf577259f4678be6afd6d`
- `Linux >= 4b04cc6a8f86c4842314def22332de1f15de8523 < b96c7b25eb1b748f3e3b1832ebf028b0b223d7e3`
- `Linux >= 4b04cc6a8f86c4842314def22332de1f15de8523 < b222680ba55e018426c4535067a008f1d81a5d21`
- `Linux >= 4b04cc6a8f86c4842314def22332de1f15de8523 < 166e31d7dbf6aa44829b98aa446bda5c9580f12a`
- `Linux 5.0`

## Remediation

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