FKIE_CVE-2023-53054

Vulnerability from fkie_nvd - Published: 2025-05-02 16:15 - Updated: 2026-06-17 06:44
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: dwc2: fix a devres leak in hw_enable upon suspend resume Each time the platform goes to low power, PM suspend / resume routines call: __dwc2_lowlevel_hw_enable -> devm_add_action_or_reset(). This adds a new devres each time. This may also happen at runtime, as dwc2_lowlevel_hw_enable() can be called from udc_start(). This can be seen with tracing: - echo 1 > /sys/kernel/debug/tracing/events/dev/devres_log/enable - go to low power - cat /sys/kernel/debug/tracing/trace A new "ADD" entry is found upon each low power cycle: ... devres_log: 49000000.usb-otg ADD 82a13bba devm_action_release (8 bytes) ... devres_log: 49000000.usb-otg ADD 49889daf devm_action_release (8 bytes) ... A second issue is addressed here: - regulator_bulk_enable() is called upon each PM cycle (suspend/resume). - regulator_bulk_disable() never gets called. So the reference count for these regulators constantly increase, by one upon each low power cycle, due to missing regulator_bulk_disable() call in __dwc2_lowlevel_hw_disable(). The original fix that introduced the devm_add_action_or_reset() call, fixed an issue during probe, that happens due to other errors in dwc2_driver_probe() -> dwc2_core_reset(). Then the probe fails without disabling regulators, when dr_mode == USB_DR_MODE_PERIPHERAL. Rather fix the error path: disable all the low level hardware in the error path, by using the "hsotg->ll_hw_enabled" flag. Checking dr_mode has been introduced to avoid a dual call to dwc2_lowlevel_hw_disable(). "ll_hw_enabled" should achieve the same (and is used currently in the remove() routine).
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1f01027c51eb16145e8e07fafea3ca07ef102d06Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6485fc381b6528b6f547ee1ff10bdbcbe31a6e4cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cba76e1fb896b573f09f51aa299223276a77bc90Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f747313249b74f323ddf841a9c8db14d989f296aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ffb8ab6f87bd28d700ab5c20d9d3a7e75067630dPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.3
linux linux_kernel 6.3
linux linux_kernel 6.3
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc2: fix a devres leak in hw_enable upon suspend resume\n\nEach time the platform goes to low power, PM suspend / resume routines\ncall: __dwc2_lowlevel_hw_enable -\u003e devm_add_action_or_reset().\nThis adds a new devres each time.\nThis may also happen at runtime, as dwc2_lowlevel_hw_enable() can be\ncalled from udc_start().\n\nThis can be seen with tracing:\n- echo 1 \u003e /sys/kernel/debug/tracing/events/dev/devres_log/enable\n- go to low power\n- cat /sys/kernel/debug/tracing/trace\n\nA new \"ADD\" entry is found upon each low power cycle:\n... devres_log: 49000000.usb-otg ADD 82a13bba devm_action_release (8 bytes)\n... devres_log: 49000000.usb-otg ADD 49889daf devm_action_release (8 bytes)\n...\n\nA second issue is addressed here:\n- regulator_bulk_enable() is called upon each PM cycle (suspend/resume).\n- regulator_bulk_disable() never gets called.\n\nSo the reference count for these regulators constantly increase, by one\nupon each low power cycle, due to missing regulator_bulk_disable() call\nin __dwc2_lowlevel_hw_disable().\n\nThe original fix that introduced the devm_add_action_or_reset() call,\nfixed an issue during probe, that happens due to other errors in\ndwc2_driver_probe() -\u003e dwc2_core_reset(). Then the probe fails without\ndisabling regulators, when dr_mode == USB_DR_MODE_PERIPHERAL.\n\nRather fix the error path: disable all the low level hardware in the\nerror path, by using the \"hsotg-\u003ell_hw_enabled\" flag. Checking dr_mode\nhas been introduced to avoid a dual call to dwc2_lowlevel_hw_disable().\n\"ll_hw_enabled\" should achieve the same (and is used currently in the\nremove() routine)."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: dwc2: se corrige una fuga de devres en hw_enable al reanudar la suspensi\u00f3n. Cada vez que la plataforma pasa a bajo consumo, las rutinas de suspensi\u00f3n/reinicio de PM llaman a __dwc2_lowlevel_hw_enable -\u0026gt; devm_add_action_or_reset(). Esto agrega un nuevo devres cada vez. Esto tambi\u00e9n puede ocurrir en tiempo de ejecuci\u00f3n, ya que dwc2_lowlevel_hw_enable() puede llamarse desde udc_start(). Esto se puede ver con el seguimiento: - echo 1 \u0026gt; /sys/kernel/debug/tracing/events/dev/devres_log/enable - ir a bajo consumo - cat /sys/kernel/debug/tracing/trace Se encuentra una nueva entrada \"ADD\" en cada ciclo de bajo consumo: ... devres_log: 49000000.usb-otg ADD 82a13bba devm_action_release (8 bytes) ... devres_log: 49000000.usb-otg ADD 49889daf devm_action_release (8 bytes) ... Aqu\u00ed se aborda un segundo problema: - regulator_bulk_enable() se llama en cada ciclo de PM (suspender/reanudar). - regulator_bulk_disable() nunca se llama. Por lo tanto, el recuento de referencias para estos reguladores aumenta constantemente, en uno con cada ciclo de bajo consumo, debido a la falta de la llamada a regulator_bulk_disable() en __dwc2_lowlevel_hw_disable(). La correcci\u00f3n original, que introdujo la llamada a devm_add_action_or_reset(), solucion\u00f3 un problema durante el sondeo que se produce debido a otros errores en dwc2_driver_probe() -\u0026gt; dwc2_core_reset(). En ese caso, el sondeo falla sin deshabilitar los reguladores cuando dr_mode == USB_DR_MODE_PERIPHERAL. Mejor soluci\u00f3n: deshabilite todo el hardware de bajo nivel en la ruta de error mediante el indicador \"hsotg-\u0026gt;ll_hw_enabled\". Se ha introducido la comprobaci\u00f3n de dr_mode para evitar una llamada dual a dwc2_lowlevel_hw_disable(). \"ll_hw_enabled\" deber\u00eda lograr el mismo efecto (y se utiliza actualmente en la rutina remove())."
    }
  ],
  "id": "CVE-2023-53054",
  "lastModified": "2026-06-17T06:44:12.470",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-05-02T16:15:24.483",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/1f01027c51eb16145e8e07fafea3ca07ef102d06"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/6485fc381b6528b6f547ee1ff10bdbcbe31a6e4c"
    },
    {
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      "tags": [
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      "url": "https://git.kernel.org/stable/c/cba76e1fb896b573f09f51aa299223276a77bc90"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/f747313249b74f323ddf841a9c8db14d989f296a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ffb8ab6f87bd28d700ab5c20d9d3a7e75067630d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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