github - ghsa-4f82-h634-f877

GHSA-4F82-H634-F877

Vulnerability from github – Published: 2025-12-24 12:30 – Updated: 2025-12-24 12:30

Details

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

exfat: fix refcount leak in exfat_find

Fix refcount leaks in exfat_find related to exfat_get_dentry_set.

Function exfat_get_dentry_set would increase the reference counter of es->bh on success. Therefore, exfat_put_dentry_set must be called after exfat_get_dentry_set to ensure refcount consistency. This patch relocate two checks to avoid possible leaks.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68351"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-24T11:15:58Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: fix refcount leak in exfat_find\n\nFix refcount leaks in `exfat_find` related to `exfat_get_dentry_set`.\n\nFunction `exfat_get_dentry_set` would increase the reference counter of\n`es-\u003ebh` on success. Therefore, `exfat_put_dentry_set` must be called\nafter `exfat_get_dentry_set` to ensure refcount consistency. This patch\nrelocate two checks to avoid possible leaks.",
  "id": "GHSA-4f82-h634-f877",
  "modified": "2025-12-24T12:30:29Z",
  "published": "2025-12-24T12:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68351"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9aee8de970f18c2aaaa348e3de86c38e2d956c1d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d009ff8959d28d2a33aeb96a5f7e7161c421d78f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-68351 (GCVE-0-2025-68351)

Vulnerability from cvelistv5 – Published: 2025-12-24 10:32 – Updated: 2025-12-24 10:32

Title

exfat: fix refcount leak in exfat_find

Summary

In the Linux kernel, the following vulnerability has been resolved: exfat: fix refcount leak in exfat_find Fix refcount leaks in `exfat_find` related to `exfat_get_dentry_set`. Function `exfat_get_dentry_set` would increase the reference counter of `es->bh` on success. Therefore, `exfat_put_dentry_set` must be called after `exfat_get_dentry_set` to ensure refcount consistency. This patch relocate two checks to avoid possible leaks.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/d009ff8959d28d2a3…
	https://git.kernel.org/stable/c/9aee8de970f18c2aa…

Impacted products

Vendor

Product

Version

Linux

Affected: 13940cef95491472760ca261b6713692ece9b946 , < d009ff8959d28d2a33aeb96a5f7e7161c421d78f (git)
Affected: 13940cef95491472760ca261b6713692ece9b946 , < 9aee8de970f18c2aaaa348e3de86c38e2d956c1d (git)
Affected: 92075758782c5edb4c67d0da9e47586a624c22f7 (git)
Affected: 0c8a1d2afd0dce0ea9257ab8c2271d8db6cb575d (git)
Affected: 6c627bcc1896ba62ec793d0c00da74f3c93ce3ad (git)

Linux

Affected: 6.14
Unaffected: 0 , < 6.14 (semver)
Unaffected: 6.18.2 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/exfat/namei.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d009ff8959d28d2a33aeb96a5f7e7161c421d78f",
              "status": "affected",
              "version": "13940cef95491472760ca261b6713692ece9b946",
              "versionType": "git"
            },
            {
              "lessThan": "9aee8de970f18c2aaaa348e3de86c38e2d956c1d",
              "status": "affected",
              "version": "13940cef95491472760ca261b6713692ece9b946",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "92075758782c5edb4c67d0da9e47586a624c22f7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0c8a1d2afd0dce0ea9257ab8c2271d8db6cb575d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6c627bcc1896ba62ec793d0c00da74f3c93ce3ad",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/exfat/namei.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
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            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.2",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.14",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.12.23",
                  "vulnerable": true
                },
                {
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                  "versionStartIncluding": "6.13.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.12.59",
                  "vulnerable": true
                }
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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\nexfat: fix refcount leak in exfat_find\n\nFix refcount leaks in `exfat_find` related to `exfat_get_dentry_set`.\n\nFunction `exfat_get_dentry_set` would increase the reference counter of\n`es-\u003ebh` on success. Therefore, `exfat_put_dentry_set` must be called\nafter `exfat_get_dentry_set` to ensure refcount consistency. This patch\nrelocate two checks to avoid possible leaks."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-24T10:32:42.683Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/d009ff8959d28d2a33aeb96a5f7e7161c421d78f"
        },
        {
          "url": "https://git.kernel.org/stable/c/9aee8de970f18c2aaaa348e3de86c38e2d956c1d"
        }
      ],
      "title": "exfat: fix refcount leak in exfat_find",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68351",
    "datePublished": "2025-12-24T10:32:42.683Z",
    "dateReserved": "2025-12-16T14:48:05.300Z",
    "dateUpdated": "2025-12-24T10:32:42.683Z",
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  },
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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-4F82-H634-F877

CVE-2025-68351 (GCVE-0-2025-68351)

Tags

Sightings

Nomenclature