---
id: CVE-2025-68743
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  mshv: Fix create memory region overlap check

  The current check is incorrect; it only checks if the beginning or end
  of a region is within an existing region
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  mshv: Fix create memory region overlap check

  The current check is incorrect; it only checks if the beginning or end
  of a region is within an existing region. This does…
severity: none
published: '2025-12-24'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T10:10:00.193'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-68743'
references:
  - url: 'https://git.kernel.org/stable/c/2183924dd834e0703f87e17c17e689bcbf55d69d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ab3e7a78d83a61d335458cfe2e4d17eba69ae73d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ba9eb9b86d232854e983203dc2fb1ba18e316681'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00185
epssPercentile: 0.07474
ingestedAt: '2026-10-13T10:22:03.518Z'
---

## Overview

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

mshv: Fix create memory region overlap check

The current check is incorrect; it only checks if the beginning or end
of a region is within an existing region. This doesn't account for
userspace specifying a region that begins before and ends after an
existing region.

Change the logic to a range intersection check against gfns and uaddrs
for each region.

Remove mshv_partition_region_by_uaddr() as it is no longer used.

## Remediation

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