fkie_cve-2025-38497
Vulnerability from fkie_nvd
Published
2025-07-28 12:15
Modified
2025-11-03 18:16
Severity ?
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/15a87206879951712915c03c8952a73d6a74721e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/22b7897c289cc25d99c603f5144096142a30d897
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2798111f8e504ac747cce911226135d50b8de468
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3014168731b7930300aab656085af784edc861f6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/58bdd5160184645771553ea732da5c2887fc9bd1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/783ea37b237a9b524f1e5ca018ea17d772ee0ea0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/78b41148cfea2a3f04d87adf3a71b21735820a37
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d68b7c8fefbaeae8f065b84e40cf64baf4cc0c76
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Impacted products
Vendor Product Version


To clipboard 

{
  "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": "2025-11-03T18:16:25.773",
  "metrics": {},
  "published": "2025-07-28T12:15:31.963",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/15a87206879951712915c03c8952a73d6a74721e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/22b7897c289cc25d99c603f5144096142a30d897"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2798111f8e504ac747cce911226135d50b8de468"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3014168731b7930300aab656085af784edc861f6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/58bdd5160184645771553ea732da5c2887fc9bd1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/783ea37b237a9b524f1e5ca018ea17d772ee0ea0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/78b41148cfea2a3f04d87adf3a71b21735820a37"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d68b7c8fefbaeae8f065b84e40cf64baf4cc0c76"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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