CVE-2020-28941

Public on 2020-11-19
Modified on 2021-01-13
Description

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.

Severity
Medium
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CVSS v3 Base Score
5.5
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 kernel 2021-01-12 22:51 ALAS-2021-1461
Amazon Linux 2 kernel 2020-12-08 20:55 ALAS2-2020-1566

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Amazon Linux CVSSv2 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C
NVD CVSSv3 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD CVSSv2 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C