---
id: CVE-2026-74375
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  md/raid1,raid10: fix deadlock in read error recovery path

  raid1d and raid10d may resubmit a split md cloned bio while handling
  a read error
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  md/raid1,raid10: fix deadlock in read error recovery path

  raid1d and raid10d may resubmit a split md cloned bio while handling
  a read error. In this case, resubmitting…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= bb2a9acefaf9ce5bbc1e70f407e34599233d0243 <
    ea2d1d2ebf60b70b602a92261a567d5fc4575eab
  - >-
    Linux >= bb2a9acefaf9ce5bbc1e70f407e34599233d0243 <
    38777f014c37972868f1733a651c85288bb8a757
  - >-
    Linux >= bb2a9acefaf9ce5bbc1e70f407e34599233d0243 <
    7b15c24f805339a585cfe7d72f446b7e88b9bcc0
  - Linux 6.6
published: '2026-08-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T11:17:46.173'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-74375'
references:
  - url: 'https://git.kernel.org/stable/c/38777f014c37972868f1733a651c85288bb8a757'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7b15c24f805339a585cfe7d72f446b7e88b9bcc0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ea2d1d2ebf60b70b602a92261a567d5fc4575eab'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74375.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-74375'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2516747'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-74375'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-74375'
  - url: >-
      https://lore.kernel.org/linux-cve-announce/2026081504-CVE-2026-74375-aa69@gregkh/T
  - url: 'https://git.kernel.org/stable/c/923a6f3172a362d6b2ff12386e376e0e47188f78'
  - url: 'https://git.kernel.org/stable/c/0889242775340e2c5b69b1590bd71335dd4fdeda'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00168
epssPercentile: 0.06055
ingestedAt: '2026-10-15T11:00:41.677Z'
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-833
---

## Overview

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

md/raid1,raid10: fix deadlock in read error recovery path

raid1d and raid10d may resubmit a split md cloned bio while handling
a read error. In this case, resubmitting the bio can lead to a deadlock
if the array is suspended before md_handle_request() acquires an
active_io reference via percpu_ref_tryget_live().

Since the cloned bio already holds an active_io reference,
trying to acquire another reference via percpu_ref_tryget_live()
can lead to a deadlock while the array is suspended.

Fix this by using percpu_ref_get() for md cloned bios.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74375.json)