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CVE-2022-49831

Estado: AnalizadaMedia (5.5)—

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

btrfs: zoned: initialize device's zone info for seeding

When performing seeding on a zoned filesystem it is necessary to initialize each zoned device's btrfs_zoned_device_info structure, otherwise mounting the filesystem will cause a NULL pointer dereference.

This was uncovered by fstests' testcase btrfs/163.

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-2022-49831",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "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/volumes.h"
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              "version": "5.12"
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            },
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              "status": "unaffected",
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            },
            {
              "status": "unaffected",
              "version": "6.1",
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          "programFiles": [
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            "fs/btrfs/volumes.c",
            "fs/btrfs/volumes.h"
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          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-05-01T15:16:06.573",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/544f38a738343d7e75f104e5e9d1ade58d8b71bd",
      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
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      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
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      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: initialize device's zone info for seeding\n\nWhen performing seeding on a zoned filesystem it is necessary to\ninitialize each zoned device's btrfs_zoned_device_info structure,\notherwise mounting the filesystem will cause a NULL pointer dereference.\n\nThis was uncovered by fstests' testcase btrfs/163."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: zoned: inicializar la información de zona del dispositivo para la propagación. Al propagar en un sistema de archivos con zonas, es necesario inicializar la estructura btrfs_zoned_device_info de cada dispositivo; de lo contrario, al montar el sistema de archivos se producirá una desreferencia de puntero nulo. Esto fue descubierto por el caso de prueba btrfs/163 de fstests."
    }
  ],
  "lastModified": "2026-06-17T05:19:14.967",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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}