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CVE-2020-28941

Status: ModifiedMedium (5.5)—

An issue was discovered in drivers/accessibility/speakup/spk_ttyio.c in the Linux kernel through 5.9.9. Local attackers on systems with the speakup driver could cause a local denial of service attack, aka CID-d41227544427. This occurs because of an invalid free when the line discipline is used more than once.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (3)

Debian — Debian LinuxFedoraproject — FedoraLinux — Linux Kernel

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2020-28941",
  "cveTags": [],
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-05-29T16:06:48.325637Z"
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  "published": "2020-11-19T19:15:11.797",
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      "description": [
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      "value": "An issue was discovered in drivers/accessibility/speakup/spk_ttyio.c in the Linux kernel through 5.9.9. Local attackers on systems with the speakup driver could cause a local denial of service attack, aka CID-d41227544427. This occurs because of an invalid free when the line discipline is used more than once."
    },
    {
      "lang": "es",
      "value": "Se detectó un problema en el archivo drivers/accessibility/speakup/spk_ttyio.c en el kernel de Linux versiones hasta 5.9.9. Los atacantes locales en sistemas con el controlador speakup podrían causar un ataque local de denegación de servicio, también se conoce como CID-d41227544427. Esto ocurre debido a una liberación no válida cuando la disciplina de línea se usa más de una vez"
    }
  ],
  "lastModified": "2026-06-17T03:10:52.583",
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