FKIE_CVE-2025-68351

Vulnerability from fkie_nvd - Published: 2025-12-24 11:15 - Updated: 2026-10-19 21:10
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9aee8de970f18c2aaaa348e3de86c38e2d956c1dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d009ff8959d28d2a33aeb96a5f7e7161c421d78fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fc9ce762525e73438d31b613f18bca92a4d3d578Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.14
linux linux_kernel 6.14
linux linux_kernel 6.14
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "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": "fc9ce762525e73438d31b613f18bca92a4d3d578",
              "status": "affected",
              "version": "92075758782c5edb4c67d0da9e47586a624c22f7",
              "versionType": "git"
            },
            {
              "lessThan": "d009ff8959d28d2a33aeb96a5f7e7161c421d78f",
              "status": "affected",
              "version": "13940cef95491472760ca261b6713692ece9b946",
              "versionType": "git"
            },
            {
              "lessThan": "9aee8de970f18c2aaaa348e3de86c38e2d956c1d",
              "status": "affected",
              "version": "13940cef95491472760ca261b6713692ece9b946",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0c8a1d2afd0dce0ea9257ab8c2271d8db6cb575d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6c627bcc1896ba62ec793d0c00da74f3c93ce3ad",
              "versionType": "git"
            },
            {
              "lessThan": "6.12.68",
              "status": "affected",
              "version": "6.12.23",
              "versionType": "semver"
            },
            {
              "lessThan": "6.14",
              "status": "affected",
              "version": "6.13.11",
              "versionType": "semver"
            }
          ]
        },
        {
          "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"
            },
            {
              "lessThan": "6.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.68",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "28943D23-3250-40EE-B96D-D85863D638ED",
              "versionEndExcluding": "6.12.68",
              "versionStartIncluding": "6.12.23",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1323075B-EB55-4141-B0AB-902D5B5D1EC2",
              "versionEndExcluding": "6.13",
              "versionStartIncluding": "6.12.59",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "124AE182-7E9F-4410-9E08-5976ED49C6A4",
              "versionEndExcluding": "6.14",
              "versionStartIncluding": "6.13.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8B01DCEF-D70D-4DFC-B763-72CBBD6EC614",
              "versionEndExcluding": "6.18.2",
              "versionStartIncluding": "6.14.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.14:-:*:*:*:*:*:*",
              "matchCriteriaId": "7DE421BA-0600-4401-A175-73CAB6A6FB4E",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc6:*:*:*:*:*:*",
              "matchCriteriaId": "1759FFB7-531C-41B1-9AE1-FD3D80E0D920",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc7:*:*:*:*:*:*",
              "matchCriteriaId": "AD948719-8628-4421-A340-1066314BBD4A",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "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."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad:\\n\\nexfat: corregir fuga de contador de referencias en exfat_find\\n\\nCorregir fugas de contador de referencias en \u0027exfat_find\u0027 relacionadas con \u0027exfat_get_dentry_set\u0027.\\n\\nLa funci\u00f3n \u0027exfat_get_dentry_set\u0027 incrementar\u00eda el contador de referencias de\\n\u0027es -\u003e bh\u0027 al tener \u00e9xito. Por lo tanto, \u0027exfat_put_dentry_set\u0027 debe llamarse\\ndespu\u00e9s de \u0027exfat_get_dentry_set\u0027 para garantizar la consistencia del contador de referencias. Este parche\\nreubica dos verificaciones para evitar posibles fugas."
    }
  ],
  "id": "CVE-2025-68351",
  "lastModified": "2026-10-19T21:10:00.160",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-12-24T11:15:58.447",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/9aee8de970f18c2aaaa348e3de86c38e2d956c1d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d009ff8959d28d2a33aeb96a5f7e7161c421d78f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/fc9ce762525e73438d31b613f18bca92a4d3d578"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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