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CVE-2022-49469

Estado: AnalizadaMedia (5.5)—

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

btrfs: fix anon_dev leak in create_subvol()

When btrfs_qgroup_inherit(), btrfs_alloc_tree_block, or btrfs_insert_root() fail in create_subvol(), we return without freeing anon_dev. Reorganize the error handling in create_subvol() to fix this.

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 (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2022-49469",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
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          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
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          "vendor": "Linux",
          "product": "Linux",
          "versions": [
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            "fs/btrfs/ioctl.c"
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            }
          ],
          "programFiles": [
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      ]
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  ],
  "published": "2025-02-26T07:01:23.157",
  "references": [
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      "url": "https://git.kernel.org/stable/c/2256e901f5bddc56e24089c96f27b77da932dfcc",
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      "url": "https://git.kernel.org/stable/c/d887b3de318834f9aa637ecf79c6bc66cba7c69a",
      "tags": [
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      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix anon_dev leak in create_subvol()\n\nWhen btrfs_qgroup_inherit(), btrfs_alloc_tree_block, or\nbtrfs_insert_root() fail in create_subvol(), we return without freeing\nanon_dev. Reorganize the error handling in create_subvol() to fix this."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: se corrige la fuga de anon_dev en create_subvol() Cuando btrfs_qgroup_inherit(), btrfs_alloc_tree_block o btrfs_insert_root() fallan en create_subvol(), regresamos sin liberar anon_dev. Reorganice la gestión de errores en create_subvol() para solucionar esto."
    }
  ],
  "lastModified": "2026-06-17T05:18:08.603",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}