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CVE-2022-49806

Estado: AnalizadaMedia (5.5)—

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

net: microchip: sparx5: Fix potential null-ptr-deref in sparx_stats_init() and sparx5_start()

sparx_stats_init() calls create_singlethread_workqueue() and not checked the ret value, which may return NULL. And a null-ptr-deref may happen:

Check the ret value and return -ENOMEM if it is NULL. So as sparx5_start().

Detalles técnicos trazas, registros y código del informe original
sparx_stats_init()
    create_singlethread_workqueue() # failed, sparx5->stats_queue is NULL
    queue_delayed_work()
        queue_delayed_work_on()
            __queue_delayed_work()  # warning here, but continue
                __queue_work()      # access wq->flags, null-ptr-deref

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)

Mostrar
{
  "id": "CVE-2022-49806",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "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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      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "b37a1bae742f92cc9b1f777d54e04ee3d86bbfc2",
              "lessThan": "80e590aeb132887102c3fa79d99b338f099dc952",
              "versionType": "git"
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            {
              "status": "affected",
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              "versionType": "git"
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            {
              "status": "affected",
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              "lessThan": "639f5d006e36bb303f525d9479448c412b720c39",
              "versionType": "git"
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          ],
          "programFiles": [
            "drivers/net/ethernet/microchip/sparx5/sparx5_ethtool.c",
            "drivers/net/ethernet/microchip/sparx5/sparx5_main.c"
          ],
          "defaultStatus": "unaffected"
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              "version": "0",
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              "version": "5.15.80",
              "versionType": "semver",
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            {
              "status": "unaffected",
              "version": "6.0.10",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/microchip/sparx5/sparx5_ethtool.c",
            "drivers/net/ethernet/microchip/sparx5/sparx5_main.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-05-01T15:16:03.920",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/456327e565dc49d18b2f595f39f47df8a36f1057",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/639f5d006e36bb303f525d9479448c412b720c39",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/80e590aeb132887102c3fa79d99b338f099dc952",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "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\nnet: microchip: sparx5: Fix potential null-ptr-deref in sparx_stats_init() and sparx5_start()\n\nsparx_stats_init() calls create_singlethread_workqueue() and not\nchecked the ret value, which may return NULL. And a null-ptr-deref may\nhappen:\n\nsparx_stats_init()\n    create_singlethread_workqueue() # failed, sparx5->stats_queue is NULL\n    queue_delayed_work()\n        queue_delayed_work_on()\n            __queue_delayed_work()  # warning here, but continue\n                __queue_work()      # access wq->flags, null-ptr-deref\n\nCheck the ret value and return -ENOMEM if it is NULL. So as\nsparx5_start()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: microchip: sparx5: Se corrige un posible null-ptr-deref en sparx_stats_init() y sparx5_start(). sparx_stats_init() llama a create_singlethread_workqueue() y no comprueba el valor ret, lo que puede devolver NULL. Y puede ocurrir un null-ptr-deref: sparx_stats_init() create_singlethread_workqueue() # falló, sparx5->stats_queue es NULL queue_delayed_work() queue_delayed_work_on() __queue_delayed_work() # advertencia aquí, pero continúe __queue_work() # acceso a wq->flags, null-ptr-deref Compruebe el valor ret y devuelva -ENOMEM si es NULL. Así como sparx5_start()."
    }
  ],
  "lastModified": "2026-06-17T05:19:11.380",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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}