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CVE-2021-4149

Estado: ModificadaMedia (5.5)—

Se encontró una vulnerabilidad en la función btrfs_alloc_tree_b en el archivo fs/btrfs/extent-tree.c en el kernel de Linux debido a una operación de bloqueo inapropiada en btrfs. En este fallo, un usuario con privilegio local puede causar una denegación de servicio (DOS) debido a un problema de bloqueo

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

CWE

Referencias

JSON original (NVD)

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          "authentication": "NONE",
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          "confidentialityImpact": "NONE"
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        "impactScore": 2.9,
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        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
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  "affected": [
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  "published": "2022-03-23T20:15:09.997",
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  "vulnStatus": "Modified",
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          "value": "CWE-667"
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      "value": "A vulnerability was found in btrfs_alloc_tree_b in fs/btrfs/extent-tree.c in the Linux kernel due to an improper lock operation in btrfs. In this flaw, a user with a local privilege may cause a denial of service (DOS) due to a deadlock problem."
    },
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    }
  ],
  "lastModified": "2026-06-17T04:19:07.233",
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