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

Vulnerability from cvelistv5 – Published: 2025-12-24 12:09 – Updated: 2026-05-11 21:52
VLAI
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 CNA under the mitre root
CNA scorecard D 53/100 over 6653 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 621191d709b14882270dfd8ea5d7d6cdfebe2c35 , < 2183924dd834e0703f87e17c17e689bcbf55d69d (git)
Affected: 621191d709b14882270dfd8ea5d7d6cdfebe2c35 , < ab3e7a78d83a61d335458cfe2e4d17eba69ae73d (git)
Affected: 621191d709b14882270dfd8ea5d7d6cdfebe2c35 , < ba9eb9b86d232854e983203dc2fb1ba18e316681 (git)
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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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{
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          "programFiles": [
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          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:52:29.313Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68743",
    "datePublished": "2025-12-24T12:09:40.148Z",
    "dateReserved": "2025-12-24T10:30:51.030Z",
    "dateUpdated": "2026-05-11T21:52:29.313Z",
    "state": "PUBLISHED"
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        "descriptions": [
          {
            "lang": "en",
            "value": "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."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nmshv: Correcci\u00f3n de la verificaci\u00f3n de superposici\u00f3n de regi\u00f3n de memoria al crear\n\nLa verificaci\u00f3n actual es incorrecta; solo verifica si el inicio o el final de una regi\u00f3n est\u00e1 dentro de una regi\u00f3n existente. Esto no tiene en cuenta que el espacio de usuario especifique una regi\u00f3n que comienza antes y termina despu\u00e9s de una regi\u00f3n existente.\n\nCambiar la l\u00f3gica a una verificaci\u00f3n de intersecci\u00f3n de rangos contra gfns y uaddrs para cada regi\u00f3n.\n\nEliminar mshv_partition_region_by_uaddr() ya que ya no se utiliza."
          }
        ],
        "id": "CVE-2025-68743",
        "lastModified": "2026-10-13T10:10:00.193",
        "metrics": {},
        "published": "2025-12-24T13:16:29.247",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/2183924dd834e0703f87e17c17e689bcbf55d69d"
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ab3e7a78d83a61d335458cfe2e4d17eba69ae73d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
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      "aggregate_severity": "None",
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      "cve": "CVE-2025-68743",
      "id": "CVE-2025-68743",
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      "product_status:known_not_affected": "200",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mshv: Fix create memory region overlap check",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68743.json",
      "version": "3"
    }
  }
}



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