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CVE-2022-49192

Estado: AnalizadaMedia (5.5)—

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

drivers: ethernet: cpsw: fix panic when interrupt coaleceing is set via ethtool

cpsw_ethtool_begin directly returns the result of pm_runtime_get_sync when successful. pm_runtime_get_sync returns -error code on failure and 0 on successful resume but also 1 when the device is already active. So the common case for cpsw_ethtool_begin is to return 1. That leads to inconsistent calls to pm_runtime_put in the call-chain so that pm_runtime_put is called one too many times and as result leaving the cpsw dev behind suspended.

The suspended cpsw dev leads to an access violation later on by different parts of the cpsw driver.

Leer descripción completaMostrar menos

Fix this by calling the return-friendly pm_runtime_resume_and_get function.

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-2022-49192",
  "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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          "product": "Linux",
          "versions": [
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            {
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          ],
          "programFiles": [
            "drivers/net/ethernet/ti/cpsw_ethtool.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
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              "status": "affected",
              "version": "5.15"
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            {
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              "version": "5.17.2",
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              "lessThanOrEqual": "5.17.*"
            },
            {
              "status": "unaffected",
              "version": "5.18",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/ti/cpsw_ethtool.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-02-26T07:00:56.287",
  "references": [
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      "url": "https://git.kernel.org/stable/c/2844e2434385819f674d1fb4130c308c50ba681e",
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      "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": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers: ethernet: cpsw: fix panic when interrupt coaleceing is set via ethtool\n\ncpsw_ethtool_begin directly returns the result of pm_runtime_get_sync\nwhen successful.\npm_runtime_get_sync returns -error code on failure and 0 on successful\nresume but also 1 when the device is already active. So the common case\nfor cpsw_ethtool_begin is to return 1. That leads to inconsistent calls\nto pm_runtime_put in the call-chain so that pm_runtime_put is called\none too many times and as result leaving the cpsw dev behind suspended.\n\nThe suspended cpsw dev leads to an access violation later on by\ndifferent parts of the cpsw driver.\n\nFix this by calling the return-friendly pm_runtime_resume_and_get\nfunction."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drivers: ethernet: cpsw: fix panic when interrumpe coaleceing is seted via ethtool cpsw_ethtool_begin directamente devuelve el resultado de pm_runtime_get_sync cuando es exitoso. pm_runtime_get_sync devuelve el código de error en caso de fallo y 0 en caso de reanudación exitosa, pero también 1 cuando el dispositivo ya está activo. Por lo tanto, el caso común para cpsw_ethtool_begin es devolver 1. Eso lleva a llamadas inconsistentes a pm_runtime_put en la cadena de llamadas, de modo que pm_runtime_put se llama una vez de más y, como resultado, deja suspendido el cpsw dev. El cpsw dev suspendido lleva a una violación de acceso más adelante por diferentes partes del controlador cpsw. Solucione esto llamando a la función pm_runtime_resume_and_get, que es amigable con los retornos."
    }
  ],
  "lastModified": "2026-06-17T05:17:20.663",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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          "operator": "OR"
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}