CVE-2025-21711

Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
net/rose: prevent integer overflows in rose_setsockopt()
In case of possible unpredictably large arguments passed to rose_setsockopt() and multiplied by extra values on top of that, integer overflows may occur.
Do the safest minimum and fix these issues by checking the contents of 'opt' and returning -EINVAL if they are too large. Also, switch to unsigned int and remove useless check for negative 'opt' in ROSE_IDLE case.
CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 5.5
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.23%
Percentil entre todas las CVEs puntuadas: 13
Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)

Linux — Linux Kernel
CWE

CWE-190
Referencias

JSON original (NVD)

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  "id": "CVE-2025-21711",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
        "exploitabilityScore": 1.8
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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-190"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/rose: prevent integer overflows in rose_setsockopt()\n\nIn case of possible unpredictably large arguments passed to\nrose_setsockopt() and multiplied by extra values on top of that,\ninteger overflows may occur.\n\nDo the safest minimum and fix these issues by checking the\ncontents of 'opt' and returning -EINVAL if they are too large. Also,\nswitch to unsigned int and remove useless check for negative 'opt'\nin ROSE_IDLE case."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/rose: evitar desbordamientos de números enteros en rose_setsockopt() En caso de que se pasen argumentos impredeciblemente grandes a rose_setsockopt() y se multipliquen por valores adicionales además de eso, pueden ocurrir desbordamientos de números enteros. Haga lo mínimo más seguro y solucione estos problemas comprobando el contenido de 'opt' y devolviendo -EINVAL si es demasiado grande. Además, cambie a int sin signo y elimine la comprobación inútil para 'opt' negativo en el caso de ROSE_IDLE."
    }
  ],
  "lastModified": "2026-06-17T08:44:05.310",
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