---
id: CVE-2026-74614
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  vsock/virtio: read virtqueues under worker locks

  Commit bd50c5dc182b ("vsock/virtio: add support for device
  suspend/resume") made the *_run flags transition from false…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  vsock/virtio: read virtqueues under worker locks

  Commit bd50c5dc182b ("vsock/virtio: add support for device
  suspend/resume") made the *_run flags transition from false…
severity: high
cvss: 8.4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-416
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 762c251c7f5c4ee5bef71460c6e822ed293fd69f <
    941329ce14c5f481223a10d1d4c8b57ea7f3048a
  - >-
    Linux >= bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c <
    29dd10583bf9d2744cd84b862e4257c0a5699570
  - >-
    Linux >= bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c <
    a1fb0c5b8a7c2753758aeced40971f99449dde0c
  - >-
    Linux >= bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c <
    eae099c764c7ebdb842eb1f638913e310bdd6513
  - >-
    Linux >= bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c <
    bd43a7ec668be428265b3209eb43647aedcf720a
  - >-
    Linux >= bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c <
    1cecb4202afdbeddcf29d59baf596ac6ab753f7f
  - >-
    Linux >= bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c <
    ebac8f6b1ef0e9278afe204b8692a7479988dace
  - Linux >= 5.15.138 < 5.15.216
  - Linux 5.19
published: '2026-08-22'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T20:17:46.687'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-74614'
references:
  - url: 'https://git.kernel.org/stable/c/1cecb4202afdbeddcf29d59baf596ac6ab753f7f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/29dd10583bf9d2744cd84b862e4257c0a5699570'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/941329ce14c5f481223a10d1d4c8b57ea7f3048a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a1fb0c5b8a7c2753758aeced40971f99449dde0c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bd43a7ec668be428265b3209eb43647aedcf720a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/eae099c764c7ebdb842eb1f638913e310bdd6513'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ebac8f6b1ef0e9278afe204b8692a7479988dace'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74614.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-74614'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2521402'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-74614'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-74614'
  - url: 'https://kernelcve.org/list/?q=CVE-2026-74614'
  - url: >-
      https://lore.kernel.org/linux-cve-announce/2026082218-CVE-2026-74614-b5a1@gregkh/T
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
  - score-dispute
epss: 0.00142
epssPercentile: 0.03453
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T19:02:27.223007Z'
scores:
  nvd: 8.4
  vendor: 4.7
ingestedAt: '2026-10-14T13:30:58.516Z'
---

## Overview

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

vsock/virtio: read virtqueues under worker locks

Commit bd50c5dc182b ("vsock/virtio: add support for device
suspend/resume") made the *_run flags transition from false to true when
restore installs replacement virtqueues.  The RX, TX and event workers
read their virtqueue before locking and checking the corresponding flag,
so a worker delayed across freeze and restore can observe the replacement
queue's running state while retaining a pointer to the deleted queue.

Read each virtqueue under its mutex after checking the run flag, keeping
the pointer and state in the same queue generation.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-26 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74614.json)