github - ghsa-qh7q-6f85-cjv9

GHSA-QH7Q-6F85-CJV9

Vulnerability from github – Published: 2025-12-16 15:30 – Updated: 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": []
}

CVE-2025-68212 (GCVE-0-2025-68212)

Vulnerability from cvelistv5 – Published: 2025-12-16 13:57 – Updated: 2025-12-16 13:57

Title

fs: Fix uninitialized 'offp' in statmount_string()

Summary

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.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/acfde9400e611c8d2…
	https://git.kernel.org/stable/c/0778ac7df5137d504…

Impacted products

Vendor

Product

Version

Linux

Affected: e52e97f09fb66fd868260d05bd6b74a9a3db39ee , < acfde9400e611c8d2668f1c70053c4a1d6ecfc36 (git)
Affected: e52e97f09fb66fd868260d05bd6b74a9a3db39ee , < 0778ac7df5137d5041783fadfc201f8fd55a1d9b (git)
Affected: d49c64c1d723c167f521833f429ab28d3ca7e0d9 (git)
Affected: c3787a4fae66e710543137b4b1b073cb2bff3bca (git)

Linux

Affected: 6.14
Unaffected: 0 , < 6.14 (semver)
Unaffected: 6.17.10 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/namespace.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "e52e97f09fb66fd868260d05bd6b74a9a3db39ee",
              "versionType": "git"
            },
            {
              "lessThan": "0778ac7df5137d5041783fadfc201f8fd55a1d9b",
              "status": "affected",
              "version": "e52e97f09fb66fd868260d05bd6b74a9a3db39ee",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d49c64c1d723c167f521833f429ab28d3ca7e0d9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c3787a4fae66e710543137b4b1b073cb2bff3bca",
              "versionType": "git"
            }
          ]
        },
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          "defaultStatus": "affected",
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          "programFiles": [
            "fs/namespace.c"
          ],
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "lessThan": "6.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "version": "6.17.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
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                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
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                },
                {
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                  "versionStartIncluding": "6.12.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.13.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-16T13:57:08.327Z",
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        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/0778ac7df5137d5041783fadfc201f8fd55a1d9b"
        }
      ],
      "title": "fs: Fix uninitialized \u0027offp\u0027 in statmount_string()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68212",
    "datePublished": "2025-12-16T13:57:08.327Z",
    "dateReserved": "2025-12-16T13:41:40.256Z",
    "dateUpdated": "2025-12-16T13:57:08.327Z",
    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-QH7Q-6F85-CJV9

CVE-2025-68212 (GCVE-0-2025-68212)

Tags

Sightings

Nomenclature