FKIE_CVE-2025-68743

Vulnerability from fkie_nvd - Published: 2025-12-24 13:16 - Updated: 2026-06-17 09:59
Severity
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2183924dd834e0703f87e17c17e689bcbf55d69d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ab3e7a78d83a61d335458cfe2e4d17eba69ae73d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ba9eb9b86d232854e983203dc2fb1ba18e316681
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hv/mshv_root_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2183924dd834e0703f87e17c17e689bcbf55d69d",
              "status": "affected",
              "version": "621191d709b14882270dfd8ea5d7d6cdfebe2c35",
              "versionType": "git"
            },
            {
              "lessThan": "ab3e7a78d83a61d335458cfe2e4d17eba69ae73d",
              "status": "affected",
              "version": "621191d709b14882270dfd8ea5d7d6cdfebe2c35",
              "versionType": "git"
            },
            {
              "lessThan": "ba9eb9b86d232854e983203dc2fb1ba18e316681",
              "status": "affected",
              "version": "621191d709b14882270dfd8ea5d7d6cdfebe2c35",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/hv/mshv_root_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2025-68743",
  "lastModified": "2026-06-17T09:59:30.857",
  "metrics": {},
  "published": "2025-12-24T13:16:29.247",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2183924dd834e0703f87e17c17e689bcbf55d69d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ab3e7a78d83a61d335458cfe2e4d17eba69ae73d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ba9eb9b86d232854e983203dc2fb1ba18e316681"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}


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