{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-53054",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2023-53054"
  ],
  "published": "2025-05-02T15:56:53Z",
  "summary": "usb: dwc2: fix a devres leak in hw_enable upon suspend resume",
  "details": "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 -> 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 > /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() -> 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->ll_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).",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.21-1+rpt1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v6",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v7",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v7l",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v8",
            "binary_version": "1:6.1.21-1+rpt1"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.21-1+rpt1": {
            "linux_commit": "0afb5e98488aed7017b9bf321b575d0177feb7ed",
            "upstream_version": "6.1.21",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.22"
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-53054"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1f01027c51eb16145e8e07fafea3ca07ef102d06"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cba76e1fb896b573f09f51aa299223276a77bc90"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ffb8ab6f87bd28d700ab5c20d9d3a7e75067630d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6485fc381b6528b6f547ee1ff10bdbcbe31a6e4c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f747313249b74f323ddf841a9c8db14d989f296a"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-24T06:48:58Z"
  }
}