ghsa-qh7q-6f85-cjv9
Vulnerability from github
Published
2025-12-16 15:30
Modified
2025-12-16 15:30
Details

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

fs: Fix uninitialized 'offp' in statmount_string()

In statmount_string(), most flags assign an output offset pointer (offp) which is later updated with the string offset. However, the STATMOUNT_MNT_UIDMAP and STATMOUNT_MNT_GIDMAP cases directly set the struct fields instead of using offp. This leaves offp uninitialized, leading to a possible uninitialized dereference when *offp is updated.

Fix it by assigning offp for UIDMAP and GIDMAP as well, keeping the code path consistent.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68212"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-16T14:15:54Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs: Fix uninitialized \u0027offp\u0027 in statmount_string()\n\nIn statmount_string(), most flags assign an output offset pointer (offp)\nwhich is later updated with the string offset. However, the\nSTATMOUNT_MNT_UIDMAP and STATMOUNT_MNT_GIDMAP cases directly set the\nstruct fields instead of using offp. This leaves offp uninitialized,\nleading to a possible uninitialized dereference when *offp is updated.\n\nFix it by assigning offp for UIDMAP and GIDMAP as well, keeping the code\npath consistent.",
  "id": "GHSA-qh7q-6f85-cjv9",
  "modified": "2025-12-16T15:30:45Z",
  "published": "2025-12-16T15:30:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68212"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0778ac7df5137d5041783fadfc201f8fd55a1d9b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/acfde9400e611c8d2668f1c70053c4a1d6ecfc36"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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