FKIE_CVE-2025-38497
Vulnerability from fkie_nvd - Published: 2025-07-28 12:15 - Updated: 2026-01-07 16:26
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
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 | 6.16 | |
| linux | linux_kernel | 6.16 | |
| linux | linux_kernel | 6.16 | |
| linux | linux_kernel | 6.16 | |
| linux | linux_kernel | 6.16 | |
| linux | linux_kernel | 6.16 | |
| debian | debian_linux | 11.0 |
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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"
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},
"published": "2025-07-28T12:15:31.963",
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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