github - ghsa-3fjr-pmvp-g6q5

GHSA-3FJR-PMVP-G6Q5

Vulnerability from github – Published: 2025-12-04 18:30 – Updated: 2025-12-04 18:30

Details

In the Linux kernel, the following vulnerability has been resolved:

KVM: arm64: Check the untrusted offset in FF-A memory share

Verify the offset to prevent OOB access in the hypervisor FF-A buffer in case an untrusted large enough value [U32_MAX - sizeof(struct ffa_composite_mem_region) + 1, U32_MAX] is set from the host kernel.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-40266"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-04T16:16:20Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Check the untrusted offset in FF-A memory share\n\nVerify the offset to prevent OOB access in the hypervisor\nFF-A buffer in case an untrusted large enough value\n[U32_MAX - sizeof(struct ffa_composite_mem_region) + 1, U32_MAX]\nis set from the host kernel.",
  "id": "GHSA-3fjr-pmvp-g6q5",
  "modified": "2025-12-04T18:30:53Z",
  "published": "2025-12-04T18:30:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40266"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/103e17aac09cdd358133f9e00998b75d6c1f1518"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bc1909ef38788f2ee3d8011d70bf029948433051"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f9f1aed6c8a3427900da3121e1868124854569c3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc3139d9f4c1fe1c7d5f25f99676bd8e9c6a1041"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-40266 (GCVE-0-2025-40266)

Vulnerability from cvelistv5 – Published: 2025-12-04 16:08 – Updated: 2025-12-20 08:51

Title

KVM: arm64: Check the untrusted offset in FF-A memory share

Summary

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Check the untrusted offset in FF-A memory share Verify the offset to prevent OOB access in the hypervisor FF-A buffer in case an untrusted large enough value [U32_MAX - sizeof(struct ffa_composite_mem_region) + 1, U32_MAX] is set from the host kernel.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/fc3139d9f4c1fe1c7…
	https://git.kernel.org/stable/c/bc1909ef38788f2ee…
	https://git.kernel.org/stable/c/f9f1aed6c8a342790…
	https://git.kernel.org/stable/c/103e17aac09cdd358…

Impacted products

Vendor

Product

Version

Linux

Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < fc3139d9f4c1fe1c7d5f25f99676bd8e9c6a1041 (git)
Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < bc1909ef38788f2ee3d8011d70bf029948433051 (git)
Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < f9f1aed6c8a3427900da3121e1868124854569c3 (git)
Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < 103e17aac09cdd358133f9e00998b75d6c1f1518 (git)

Linux

Affected: 3.11
Unaffected: 0 , < 3.11 (semver)
Unaffected: 6.6.118 , ≤ 6.6.* (semver)
Unaffected: 6.12.60 , ≤ 6.12.* (semver)
Unaffected: 6.17.10 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/arm64/kvm/hyp/nvhe/ffa.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fc3139d9f4c1fe1c7d5f25f99676bd8e9c6a1041",
              "status": "affected",
              "version": "6211753fdfd05af9e08f54c8d0ba3ee516034878",
              "versionType": "git"
            },
            {
              "lessThan": "bc1909ef38788f2ee3d8011d70bf029948433051",
              "status": "affected",
              "version": "6211753fdfd05af9e08f54c8d0ba3ee516034878",
              "versionType": "git"
            },
            {
              "lessThan": "f9f1aed6c8a3427900da3121e1868124854569c3",
              "status": "affected",
              "version": "6211753fdfd05af9e08f54c8d0ba3ee516034878",
              "versionType": "git"
            },
            {
              "lessThan": "103e17aac09cdd358133f9e00998b75d6c1f1518",
              "status": "affected",
              "version": "6211753fdfd05af9e08f54c8d0ba3ee516034878",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/arm64/kvm/hyp/nvhe/ffa.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.11"
            },
            {
              "lessThan": "3.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.118",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.60",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.118",
                  "versionStartIncluding": "3.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.60",
                  "versionStartIncluding": "3.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.10",
                  "versionStartIncluding": "3.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "3.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Check the untrusted offset in FF-A memory share\n\nVerify the offset to prevent OOB access in the hypervisor\nFF-A buffer in case an untrusted large enough value\n[U32_MAX - sizeof(struct ffa_composite_mem_region) + 1, U32_MAX]\nis set from the host kernel."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-20T08:51:50.089Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fc3139d9f4c1fe1c7d5f25f99676bd8e9c6a1041"
        },
        {
          "url": "https://git.kernel.org/stable/c/bc1909ef38788f2ee3d8011d70bf029948433051"
        },
        {
          "url": "https://git.kernel.org/stable/c/f9f1aed6c8a3427900da3121e1868124854569c3"
        },
        {
          "url": "https://git.kernel.org/stable/c/103e17aac09cdd358133f9e00998b75d6c1f1518"
        }
      ],
      "title": "KVM: arm64: Check the untrusted offset in FF-A memory share",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40266",
    "datePublished": "2025-12-04T16:08:25.392Z",
    "dateReserved": "2025-04-16T07:20:57.183Z",
    "dateUpdated": "2025-12-20T08:51:50.089Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-3FJR-PMVP-G6Q5

CVE-2025-40266 (GCVE-0-2025-40266)

Tags

Sightings

Nomenclature