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CVE-2021-33656

Estado: ModificadaMedia (6.8)—

When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.

CVSS

Probabilidad de explotación (EPSS)

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 (3)

Debian — Debian LinuxLinux — Linux KernelOpenatom — Openeuler

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2021-33656",
  "cveTags": [],
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.8,
          "attackVector": "PHYSICAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 0.9
      }
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  "affected": [
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      "source": "securities@openeuler.org",
      "affectedData": [
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          "vendor": "n/a",
          "product": "openEuler:kernel",
          "versions": [
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              "status": "affected",
              "version": "<5.10.127"
            }
          ]
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  ],
  "published": "2022-07-18T15:15:08.043",
  "references": [
    {
      "url": "http://www.openwall.com/lists/oss-security/2022/07/19/3",
      "tags": [
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        "Patch",
        "Third Party Advisory"
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      "tags": [
        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "securities@openeuler.org",
      "description": [
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          "value": "CWE-787"
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    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
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      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds."
    },
    {
      "lang": "es",
      "value": "Cuando es establecida la fuente con datos maliciosos por ioctl cmd PIO_FONT, el kernel escribirá memoria fuera de límites"
    }
  ],
  "lastModified": "2026-06-17T03:54:58.500",
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