mshv: Fix create memory region overlap check

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-68743
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-12-24 13:16:29 UTC
Updated2026-10-13 10:10:00 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 621191d709b14882270dfd8ea5d7d6cdfebe2c35 2183924dd834e0703f87e17c17e689bcbf55d69d git Not specified
CNA Linux Linux affected 621191d709b14882270dfd8ea5d7d6cdfebe2c35 ab3e7a78d83a61d335458cfe2e4d17eba69ae73d git Not specified
CNA Linux Linux affected 621191d709b14882270dfd8ea5d7d6cdfebe2c35 ba9eb9b86d232854e983203dc2fb1ba18e316681 git Not specified
CNA Linux Linux affected 6.15 Not specified
CNA Linux Linux unaffected 6.15 semver Not specified
CNA Linux Linux unaffected 6.17.13 6.17.* semver Not specified
CNA Linux Linux unaffected 6.18.2 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/ba9eb9b86d232854e983203dc2fb1ba18e316681 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ab3e7a78d83a61d335458cfe2e4d17eba69ae73d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2183924dd834e0703f87e17c17e689bcbf55d69d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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