CVE-2025-38134 (GCVE-0-2025-38134)
Vulnerability from cvelistv5
Published
2025-07-03 08:35
Modified
2025-07-28 04:13
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: acpi: Prevent null pointer dereference in usb_acpi_add_usb4_devlink() As demonstrated by the fix for update_port_device_state, commit 12783c0b9e2c ("usb: core: Prevent null pointer dereference in update_port_device_state"), usb_hub_to_struct_hub() can return NULL in certain scenarios, such as during hub driver unbind or teardown race conditions, even if the underlying usb_device structure exists. Plus, all other places that call usb_hub_to_struct_hub() in the same file do check for NULL return values. If usb_hub_to_struct_hub() returns NULL, the subsequent access to hub->ports[udev->portnum - 1] will cause a null pointer dereference.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/73fb0ec9436ae87bcae067ce35d6cdd72bade86c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8fa544bff8466062e42949c93f3e528f4be5624b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e3d530173b70514d4390a94f9f979acad689b70a
Impacted products
Vendor Product Version
Linux Linux Version: f1bfb4a6fed64de1771b43a76631942279851744
Version: f1bfb4a6fed64de1771b43a76631942279851744
Version: f1bfb4a6fed64de1771b43a76631942279851744
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   Linux Linux Version: 6.12
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/core/usb-acpi.c"
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          "vendor": "Linux",
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              "versionType": "git"
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          "vendor": "Linux",
          "versions": [
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              "version": "6.15.3",
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              "version": "6.16",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: acpi: Prevent null pointer dereference in usb_acpi_add_usb4_devlink()\n\nAs demonstrated by the fix for update_port_device_state,\ncommit 12783c0b9e2c (\"usb: core: Prevent null pointer dereference in update_port_device_state\"),\nusb_hub_to_struct_hub() can return NULL in certain scenarios,\nsuch as during hub driver unbind or teardown race conditions,\neven if the underlying usb_device structure exists.\n\nPlus, all other places that call usb_hub_to_struct_hub() in the same file\ndo check for NULL return values.\n\nIf usb_hub_to_struct_hub() returns NULL, the subsequent access to\nhub-\u003eports[udev-\u003eportnum - 1] will cause a null pointer dereference."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:13:10.210Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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        },
        {
          "url": "https://git.kernel.org/stable/c/73fb0ec9436ae87bcae067ce35d6cdd72bade86c"
        }
      ],
      "title": "usb: acpi: Prevent null pointer dereference in usb_acpi_add_usb4_devlink()",
      "x_generator": {
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    }
  },
  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38134",
    "datePublished": "2025-07-03T08:35:37.674Z",
    "dateReserved": "2025-04-16T04:51:23.987Z",
    "dateUpdated": "2025-07-28T04:13:10.210Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38134\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-03T09:15:27.837\",\"lastModified\":\"2025-07-03T15:13:53.147\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nusb: acpi: Prevent null pointer dereference in usb_acpi_add_usb4_devlink()\\n\\nAs demonstrated by the fix for update_port_device_state,\\ncommit 12783c0b9e2c (\\\"usb: core: Prevent null pointer dereference in update_port_device_state\\\"),\\nusb_hub_to_struct_hub() can return NULL in certain scenarios,\\nsuch as during hub driver unbind or teardown race conditions,\\neven if the underlying usb_device structure exists.\\n\\nPlus, all other places that call usb_hub_to_struct_hub() in the same file\\ndo check for NULL return values.\\n\\nIf usb_hub_to_struct_hub() returns NULL, the subsequent access to\\nhub-\u003eports[udev-\u003eportnum - 1] will cause a null pointer dereference.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/73fb0ec9436ae87bcae067ce35d6cdd72bade86c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8fa544bff8466062e42949c93f3e528f4be5624b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e3d530173b70514d4390a94f9f979acad689b70a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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