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GHSA-98RV-GPF2-FJ42

Vulnerability from github – Published: 2025-12-24 15:30 – Updated: 2025-12-24 15:30

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68743"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-24T13:16:29Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmshv: Fix create memory region overlap check\n\nThe current check is incorrect; it only checks if the beginning or end\nof a region is within an existing region. This doesn\u0027t account for\nuserspace specifying a region that begins before and ends after an\nexisting region.\n\nChange the logic to a range intersection check against gfns and uaddrs\nfor each region.\n\nRemove mshv_partition_region_by_uaddr() as it is no longer used.",
  "id": "GHSA-98rv-gpf2-fj42",
  "modified": "2025-12-24T15:30:44Z",
  "published": "2025-12-24T15:30:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68743"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2183924dd834e0703f87e17c17e689bcbf55d69d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ab3e7a78d83a61d335458cfe2e4d17eba69ae73d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ba9eb9b86d232854e983203dc2fb1ba18e316681"
    }
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  "schema_version": "1.4.0",
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}

CVE-2025-68743 (GCVE-0-2025-68743)

Vulnerability from cvelistv5 – Published: 2025-12-24 12:09 – Updated: 2026-05-11 21:52

Title

mshv: Fix create memory region overlap check

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 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.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/2183924dd834e0703…
https://git.kernel.org/stable/c/ab3e7a78d83a61d33…
https://git.kernel.org/stable/c/ba9eb9b86d232854e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 621191d709b14882270dfd8ea5d7d6cdfebe2c35 , < 2183924dd834e0703f87e17c17e689bcbf55d69d (git) Affected: 621191d709b14882270dfd8ea5d7d6cdfebe2c35 , < ab3e7a78d83a61d335458cfe2e4d17eba69ae73d (git) Affected: 621191d709b14882270dfd8ea5d7d6cdfebe2c35 , < ba9eb9b86d232854e983203dc2fb1ba18e316681 (git)
Linux	Linux	Affected: 6.15 Unaffected: 0 , < 6.15 (semver) Unaffected: 6.17.13 , ≤ 6.17.* (semver) Unaffected: 6.18.2 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hv/mshv_root_main.c"
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          "vendor": "Linux",
          "versions": [
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              "version": "621191d709b14882270dfd8ea5d7d6cdfebe2c35",
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              "version": "621191d709b14882270dfd8ea5d7d6cdfebe2c35",
              "versionType": "git"
            }
          ]
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          "versions": [
            {
              "status": "affected",
              "version": "6.15"
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            },
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              "version": "6.18.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
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        }
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        }
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:52:29.313Z",
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    "datePublished": "2025-12-24T12:09:40.148Z",
    "dateReserved": "2025-12-24T10:30:51.030Z",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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GHSA-98RV-GPF2-FJ42

CVE-2025-68743 (GCVE-0-2025-68743)

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