github - ghsa-5gqx-mjr7-rp8x

ghsa-5gqx-mjr7-rp8x

Vulnerability from github

Published

2025-12-09 18:30

Modified

2025-12-09 18:30

Details

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

drm/gpusvm: fix hmm_pfn_to_map_order() usage

Handle the case where the hmm range partially covers a huge page (like 2M), otherwise we can potentially end up doing something nasty like mapping memory which is outside the range, and maybe not even mapped by the mm. Fix is based on the xe userptr code, which in a future patch will directly use gpusvm, so needs alignment here.

v2: - Add kernel-doc (Matt B) - s/fls/ilog2/ (Thomas)

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{
  "affected": [],
  "aliases": [
    "CVE-2025-40336"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-09T16:17:43Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/gpusvm: fix hmm_pfn_to_map_order() usage\n\nHandle the case where the hmm range partially covers a huge page (like\n2M), otherwise we can potentially end up doing something nasty like\nmapping memory which is outside the range, and maybe not even mapped by\nthe mm. Fix is based on the xe userptr code, which in a future patch\nwill directly use gpusvm, so needs alignment here.\n\nv2:\n  - Add kernel-doc (Matt B)\n  - s/fls/ilog2/ (Thomas)",
  "id": "GHSA-5gqx-mjr7-rp8x",
  "modified": "2025-12-09T18:30:36Z",
  "published": "2025-12-09T18:30:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40336"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08e9fd78ba1b9e95141181c69cc51795c9888157"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c50729c68aaf93611c855752b00e49ce1fdd1558"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-40336 (GCVE-0-2025-40336)

Vulnerability from cvelistv5

Published

2025-12-09 04:09

Modified

2025-12-09 04:09

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/gpusvm: fix hmm_pfn_to_map_order() usage Handle the case where the hmm range partially covers a huge page (like 2M), otherwise we can potentially end up doing something nasty like mapping memory which is outside the range, and maybe not even mapped by the mm. Fix is based on the xe userptr code, which in a future patch will directly use gpusvm, so needs alignment here. v2: - Add kernel-doc (Matt B) - s/fls/ilog2/ (Thomas)

References

URL

Tags

	https://git.kernel.org/stable/c/08e9fd78ba1b9e95141181c69cc51795c9888157
	https://git.kernel.org/stable/c/c50729c68aaf93611c855752b00e49ce1fdd1558

Impacted products

Vendor

Product

Version

Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Show details on NVD website

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/drm_gpusvm.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "c50729c68aaf93611c855752b00e49ce1fdd1558",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
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          ]
        },
        {
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            },
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              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.8",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.18",
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                }
              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/gpusvm: fix hmm_pfn_to_map_order() usage\n\nHandle the case where the hmm range partially covers a huge page (like\n2M), otherwise we can potentially end up doing something nasty like\nmapping memory which is outside the range, and maybe not even mapped by\nthe mm. Fix is based on the xe userptr code, which in a future patch\nwill directly use gpusvm, so needs alignment here.\n\nv2:\n  - Add kernel-doc (Matt B)\n  - s/fls/ilog2/ (Thomas)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-09T04:09:52.845Z",
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        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/08e9fd78ba1b9e95141181c69cc51795c9888157"
        },
        {
          "url": "https://git.kernel.org/stable/c/c50729c68aaf93611c855752b00e49ce1fdd1558"
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      ],
      "title": "drm/gpusvm: fix hmm_pfn_to_map_order() usage",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40336",
    "datePublished": "2025-12-09T04:09:52.845Z",
    "dateReserved": "2025-04-16T07:20:57.186Z",
    "dateUpdated": "2025-12-09T04:09:52.845Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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