---
id: CVE-2025-37980
title: 'block: fix resource leak in blk_register_queue() error path'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  block: fix resource leak in blk_register_queue() error path

  When registering a queue fails after blk_mq_sysfs_register() is
  successful but the function later encounter…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 320ae51feed5c2f13664aa05a76bec198967e04d <
    6af6d5feebf9423ab3b252831d1f52de31a8b5e0
  - >-
    Linux >= 320ae51feed5c2f13664aa05a76bec198967e04d <
    549cbbd14bbec12469ceb279b79c763c8a24224e
  - >-
    Linux >= 320ae51feed5c2f13664aa05a76bec198967e04d <
    41e43134ddda35949974be40520460a12dda3502
  - >-
    Linux >= 320ae51feed5c2f13664aa05a76bec198967e04d <
    55a7bb2708f7c7c5b366d4e40916113168a3824c
  - >-
    Linux >= 320ae51feed5c2f13664aa05a76bec198967e04d <
    40f2eb9b531475dd01b683fdaf61ca3cfd03a51e
  - Linux 3.13
published: '2025-05-20'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T08:41:41.835Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-37980'
references:
  - url: 'https://git.kernel.org/stable/c/6af6d5feebf9423ab3b252831d1f52de31a8b5e0'
  - url: 'https://git.kernel.org/stable/c/549cbbd14bbec12469ceb279b79c763c8a24224e'
  - url: 'https://git.kernel.org/stable/c/41e43134ddda35949974be40520460a12dda3502'
  - url: 'https://git.kernel.org/stable/c/55a7bb2708f7c7c5b366d4e40916113168a3824c'
  - url: 'https://git.kernel.org/stable/c/40f2eb9b531475dd01b683fdaf61ca3cfd03a51e'
tags:
  - cve.org
epss: 0.00186
epssPercentile: 0.07248
ingestedAt: '2026-09-08T15:33:26.997Z'
---

## Overview

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

block: fix resource leak in blk_register_queue() error path

When registering a queue fails after blk_mq_sysfs_register() is
successful but the function later encounters an error, we need
to clean up the blk_mq_sysfs resources.

Add the missing blk_mq_sysfs_unregister() call in the error path
to properly clean up these resources and prevent a memory leak.

## Affected

- `Linux >= 320ae51feed5c2f13664aa05a76bec198967e04d < 6af6d5feebf9423ab3b252831d1f52de31a8b5e0`
- `Linux >= 320ae51feed5c2f13664aa05a76bec198967e04d < 549cbbd14bbec12469ceb279b79c763c8a24224e`
- `Linux >= 320ae51feed5c2f13664aa05a76bec198967e04d < 41e43134ddda35949974be40520460a12dda3502`
- `Linux >= 320ae51feed5c2f13664aa05a76bec198967e04d < 55a7bb2708f7c7c5b366d4e40916113168a3824c`
- `Linux >= 320ae51feed5c2f13664aa05a76bec198967e04d < 40f2eb9b531475dd01b683fdaf61ca3cfd03a51e`
- `Linux 3.13`

## Remediation

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