FKIE_CVE-2025-38497

Vulnerability from fkie_nvd - Published: 2025-07-28 12:15 - Updated: 2026-01-07 16:26
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: configfs: Fix OOB read on empty string write When writing an empty string to either 'qw_sign' or 'landingPage' sysfs attributes, the store functions attempt to access page[l - 1] before validating that the length 'l' is greater than zero. This patch fixes the vulnerability by adding a check at the beginning of os_desc_qw_sign_store() and webusb_landingPage_store() to handle the zero-length input case gracefully by returning immediately.

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: configfs: Fix OOB read on empty string write\n\nWhen writing an empty string to either \u0027qw_sign\u0027 or \u0027landingPage\u0027\nsysfs attributes, the store functions attempt to access page[l - 1]\nbefore validating that the length \u0027l\u0027 is greater than zero.\n\nThis patch fixes the vulnerability by adding a check at the beginning\nof os_desc_qw_sign_store() and webusb_landingPage_store() to handle\nthe zero-length input case gracefully by returning immediately."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: gadget: configfs: Correcci\u00f3n de lectura OOB en escritura de cadena vac\u00eda. Al escribir una cadena vac\u00eda en los atributos sysfs \u0027qw_sign\u0027 o \u0027landingPage\u0027, las funciones de almacenamiento intentan acceder a page[l - 1] antes de validar que la longitud \u0027l\u0027 sea mayor que cero. Este parche corrige la vulnerabilidad a\u00f1adiendo una comprobaci\u00f3n al inicio de os_desc_qw_sign_store() y webusb_landingPage_store() para gestionar correctamente la entrada de longitud cero, retornando inmediatamente."
    }
  ],
  "id": "CVE-2025-38497",
  "lastModified": "2026-01-07T16:26:35.247",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-07-28T12:15:31.963",
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    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
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      "url": "https://git.kernel.org/stable/c/15a87206879951712915c03c8952a73d6a74721e"
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
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}


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