---
id: CVE-2026-72439
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  md/raid10: fix writes_pending leak on write request failures

  raid10_make_request() acquires a writes_pending reference with
  md_write_start() before dispatching write r…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  md/raid10: fix writes_pending leak on write request failures

  raid10_make_request() acquires a writes_pending reference with
  md_write_start() before dispatching write r…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= c9aa889b035fca4598ae985a0f0c76ebbb547ad2 <
    c642583adc136d4c70ce3c65c3f43e847d26c776
  - >-
    Linux >= c9aa889b035fca4598ae985a0f0c76ebbb547ad2 <
    f94031c94eaebe14a7c9e91720064de0c5a54a6c
  - >-
    Linux >= c9aa889b035fca4598ae985a0f0c76ebbb547ad2 <
    e045d6ed33f8faa3e3dd6dc33c62ec01e3ad275d
  - Linux 39db562b3fedb93978a7e42dd216b306740959f8
  - Linux >= 5.15.111 < 5.16
  - Linux 5.17
published: '2026-08-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T11:17:43.690'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-72439'
references:
  - url: 'https://git.kernel.org/stable/c/c642583adc136d4c70ce3c65c3f43e847d26c776'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e045d6ed33f8faa3e3dd6dc33c62ec01e3ad275d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f94031c94eaebe14a7c9e91720064de0c5a54a6c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00198
epssPercentile: 0.08865
ingestedAt: '2026-10-15T11:00:41.682Z'
---

## Overview

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

md/raid10: fix writes_pending leak on write request failures

raid10_make_request() acquires a writes_pending reference with
md_write_start() before dispatching write requests. Several failure
paths in raid10_write_request() complete the bio and return without
reaching the normal write completion path, causing the corresponding
md_write_end() to be skipped.

Make raid10_write_request() return a status indicating whether the write
request was successfully queued. This allows raid10_make_request() to
release the writes_pending reference with md_write_end() when a write
request fails.

## Remediation

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