ghsa-r5rr-wmp2-hj47
Vulnerability from github
Published
2025-02-27 03:34
Modified
2025-11-03 21:32
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-21734"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-27T03:15:14Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-r5rr-wmp2-hj47",
  "modified": "2025-11-03T21:32:59Z",
  "published": "2025-02-27T03:34:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21734"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/24a79c6bc8de763f7c50f4f84f8b0c183bc25a51"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c0464bad0e85fcd5d47e4297d1e410097c979e55"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c3f7161123fcbdc64e90119ccce292d8b66281c4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c56ba3ea8e3c9a69a992aad18f7a65e43e51d623"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e966eae72762ecfdbdb82627e2cda48845b9dd66"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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