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GHSA-R5RR-WMP2-HJ47

Vulnerability from github – Published: 2025-02-27 03:34 – Updated: 2025-11-03 21:32

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.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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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"
    }
  ]
}

CVE-2025-21734 (GCVE-0-2025-21734)

Vulnerability from cvelistv5 – Published: 2025-02-27 02:12 – Updated: 2026-08-05 11:54

Title

misc: fastrpc: Fix copy buffer page size

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.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root Scorecard

References

6 references

URL	Tags
https://git.kernel.org/stable/c/c56ba3ea8e3c9a69a…
https://git.kernel.org/stable/c/c0464bad0e85fcd5d…
https://git.kernel.org/stable/c/24a79c6bc8de763f7…
https://git.kernel.org/stable/c/c3f7161123fcbdc64…
https://git.kernel.org/stable/c/e966eae72762ecfdb…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 02b45b47fbe84e23699bb6bdc74d4c2780e282b4 , < c56ba3ea8e3c9a69a992aad18f7a65e43e51d623 (git) Affected: 02b45b47fbe84e23699bb6bdc74d4c2780e282b4 , < c0464bad0e85fcd5d47e4297d1e410097c979e55 (git) Affected: 02b45b47fbe84e23699bb6bdc74d4c2780e282b4 , < 24a79c6bc8de763f7c50f4f84f8b0c183bc25a51 (git) Affected: 02b45b47fbe84e23699bb6bdc74d4c2780e282b4 , < c3f7161123fcbdc64e90119ccce292d8b66281c4 (git) Affected: 02b45b47fbe84e23699bb6bdc74d4c2780e282b4 , < e966eae72762ecfdbdb82627e2cda48845b9dd66 (git)
Linux	Linux	Affected: 5.2 Unaffected: 0 , < 5.2 (semver) Unaffected: 6.1.129 , ≤ 6.1.* (semver) Unaffected: 6.6.78 , ≤ 6.6.* (semver) Unaffected: 6.12.14 , ≤ 6.12.* (semver) Unaffected: 6.13.3 , ≤ 6.13.* (semver) Unaffected: 6.14 , ≤ * (original_commit_for_fix)

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          "dateUpdated": "2025-11-03T19:36:37.586Z",
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            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"
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Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-R5RR-WMP2-HJ47

CVE-2025-21734 (GCVE-0-2025-21734)

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