FKIE_CVE-2025-22074

Vulnerability from fkie_nvd - Published: 2025-04-16 15:16 - Updated: 2026-07-30 06:22
Severity
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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: ksmbd: fix r_count dec/increment mismatch r_count is only increased when there is an oplock break wait, so r_count inc/decrement are not paired. This can cause r_count to become negative, which can lead to a problem where the ksmbd thread does not terminate.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/20378cf48359f39dee0ef9b61470ebe77bd49c0dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/457db486203c90e10c3efc87fd45cc7000b1cd36Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4790bcb269e5d6d88200a67c54ae6d627332a3bePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c2ec33d46b4d1c8085dab5d02e00b21f4f0fb8a9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ddb7ea36ba7129c2ed107e2186591128618864e1Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.14
linux linux_kernel 6.14
linux linux_kernel 6.14.1
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/oplock.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4790bcb269e5d6d88200a67c54ae6d627332a3be",
              "status": "affected",
              "version": "09aeab68033161cb54f194da93e51a11aee6144b",
              "versionType": "git"
            },
            {
              "lessThan": "457db486203c90e10c3efc87fd45cc7000b1cd36",
              "status": "affected",
              "version": "a4261bbc33fbf99b99c80aa3a2c5097611802980",
              "versionType": "git"
            },
            {
              "lessThan": "20378cf48359f39dee0ef9b61470ebe77bd49c0d",
              "status": "affected",
              "version": "f17d1c63a76b0fe8e9c78023a86507a3a6d62cfa",
              "versionType": "git"
            },
            {
              "lessThan": "c2ec33d46b4d1c8085dab5d02e00b21f4f0fb8a9",
              "status": "affected",
              "version": "3aa660c059240e0c795217182cf7df32909dd917",
              "versionType": "git"
            },
            {
              "lessThan": "ddb7ea36ba7129c2ed107e2186591128618864e1",
              "status": "affected",
              "version": "3aa660c059240e0c795217182cf7df32909dd917",
              "versionType": "git"
            },
            {
              "lessThan": "6.6.87",
              "status": "affected",
              "version": "6.6.84",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.23",
              "status": "affected",
              "version": "6.12.20",
              "versionType": "semver"
            },
            {
              "lessThan": "6.13.11",
              "status": "affected",
              "version": "6.13.8",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/oplock.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": "6.6.*",
              "status": "unaffected",
              "version": "6.6.87",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.23",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C840BE22-A881-49E3-8387-B3C767385CFF",
              "versionEndExcluding": "6.6.87",
              "versionStartIncluding": "6.6.84",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E6266EAA-36A6-4293-8D0E-E9F7EA2E8341",
              "versionEndExcluding": "6.12.23",
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              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "23B69B03-DE8A-49CE-ADA3-2158636FDDED",
              "versionEndExcluding": "6.13.11",
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            },
            {
              "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:rc7:*:*:*:*:*:*",
              "matchCriteriaId": "AD948719-8628-4421-A340-1066314BBD4A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.14.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "368D376F-50DC-452F-8D91-2586C7B344FB",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix r_count dec/increment mismatch\n\nr_count is only increased when there is an oplock break wait,\nso r_count inc/decrement are not paired. This can cause r_count\nto become negative, which can lead to a problem where the ksmbd\nthread does not terminate."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: se corrige la discrepancia entre r_count decrement y decrement. r_count solo aumenta cuando hay una espera de interrupci\u00f3n de oplock, por lo que r_count inc/decrement no se empareja. Esto puede provocar que r_count sea negativo, lo que puede provocar un problema donde el subproceso ksmbd no termina."
    }
  ],
  "id": "CVE-2025-22074",
  "lastModified": "2026-07-30T06:22:10.613",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "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": "2025-04-16T15:16:01.593",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/20378cf48359f39dee0ef9b61470ebe77bd49c0d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/457db486203c90e10c3efc87fd45cc7000b1cd36"
    },
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      "url": "https://git.kernel.org/stable/c/4790bcb269e5d6d88200a67c54ae6d627332a3be"
    },
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      "url": "https://git.kernel.org/stable/c/c2ec33d46b4d1c8085dab5d02e00b21f4f0fb8a9"
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      "tags": [
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      "url": "https://git.kernel.org/stable/c/ddb7ea36ba7129c2ed107e2186591128618864e1"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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