Riskcovery

CVE-2025-68743

mshv: Fix create memory region overlap check

State
Published
Severity
Not scored
Published
Dec 24, 2025
Updated
May 11, 2026
Reserved
Dec 24, 2025

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 621191d709b14882270dfd8ea5d7d6cdfebe2c35 to before 2183924dd834e0703f87e17c17e689bcbf55d69dAffected
  • 621191d709b14882270dfd8ea5d7d6cdfebe2c35 to before ab3e7a78d83a61d335458cfe2e4d17eba69ae73dAffected
  • 621191d709b14882270dfd8ea5d7d6cdfebe2c35 to before ba9eb9b86d232854e983203dc2fb1ba18e316681Affected
LinuxLinux
  • 6.15Affected
  • before 6.15Not affected
  • 6.17.13 through 6.17.*Not affected
  • 6.18.2 through 6.18.*Not affected
  • 6.19 and laterNot affected

References

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