FKIE_CVE-2025-21734

Vulnerability from fkie_nvd - Published: 2025-02-27 03:15 - Updated: 2025-11-03 20:17
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Fix copy buffer page size For non-registered buffer, fastrpc driver copies the buffer and pass it to the remote subsystem. There is a problem with current implementation of page size calculation which is not considering the offset in the calculation. This might lead to passing of improper and out-of-bounds page size which could result in memory issue. Calculate page start and page end using the offset adjusted address instead of absolute address.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/24a79c6bc8de763f7c50f4f84f8b0c183bc25a51Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c0464bad0e85fcd5d47e4297d1e410097c979e55Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c3f7161123fcbdc64e90119ccce292d8b66281c4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c56ba3ea8e3c9a69a992aad18f7a65e43e51d623Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e966eae72762ecfdbdb82627e2cda48845b9dd66Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1EC177A9-9B21-468B-BF4D-589B3D0F5E74",
              "versionEndExcluding": "6.1.129",
              "versionStartIncluding": "5.2",
              "vulnerable": true
            },
            {
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              "versionEndExcluding": "6.6.78",
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          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: Fix copy buffer page size\n\nFor non-registered buffer, fastrpc driver copies the buffer and\npass it to the remote subsystem. There is a problem with current\nimplementation of page size calculation which is not considering\nthe offset in the calculation. This might lead to passing of\nimproper and out-of-bounds page size which could result in\nmemory issue. Calculate page start and page end using the offset\nadjusted address instead of absolute address."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: misc: fastrpc: Se corrige el tama\u00f1o de p\u00e1gina del b\u00fafer de copia Para un b\u00fafer no registrado, el controlador fastrpc copia el b\u00fafer y lo pasa al subsistema remoto. Hay un problema con la implementaci\u00f3n actual del c\u00e1lculo del tama\u00f1o de p\u00e1gina que no considera el desplazamiento en el c\u00e1lculo. Esto podr\u00eda provocar que se pase un tama\u00f1o de p\u00e1gina incorrecto y fuera de los l\u00edmites, lo que podr\u00eda generar un problema de memoria. Calcule el inicio y el final de la p\u00e1gina utilizando la direcci\u00f3n ajustada por desplazamiento en lugar de la direcci\u00f3n absoluta."
    }
  ],
  "id": "CVE-2025-21734",
  "lastModified": "2025-11-03T20:17:13.363",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-02-27T03:15:14.030",
  "references": [
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      "tags": [
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    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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